GC 36 explains one of the methods God uses to punish and destroy sinners. But it doesn't explain the other ways.

Tom, even if you were right, even if God simply withdrew His protection and allowed Satan to send fire from the most holy place and destoy Nadab and Abihu, we still have the fact it was God who did something that resulted in killing sinners. How does that make God less culpable?

It reminds me of someone releasing a pack of mad dogs in order to kill people, and then ordering the parents not to mourn their death.

54And when his disciples James and John saw this, they said, Lord, wilt thou that we command fire to come down from heaven, and consume them, even as Elias did?

55But he turned, and rebuked them, and said, Ye know not what manner of spirit ye are of.

56For the Son of man is not come to destroy men's lives, but to save them. And they went to another village. (Luke 9)

I was shown that the judgments of God would not come directly out from the Lord upon them, but in this way: They place themselves beyond His protection. He warns, corrects, reproves, and points out the only path of safety; then if those who have been the objects of His special care will follow their own course independent of the Spirit of God, after repeated warnings, if they choose their own way, then He does not commission His angels to prevent Satan's decided attacks upon them.It is Satan's power that is at work at sea and on land, bringing calamity and distress, and sweeping off multitudes to make sure of his prey. And storm and tempest both by sea and land will be, for Satan has come down in great wrath.

God will use His enemies as instruments to punish those who have followed their own pernicious ways whereby the truth of God has been misrepresented, misjudged, and dishonored.--PC 136 (1894). {LDE 242.3}

God's judgments were awakened against Jericho. It was a stronghold. But the Captain of the Lord's host Himself came from heaven to lead the armies of heaven in an attack upon the city. Angels of God laid hold of the massive walls and brought them to the ground.--3T 264 (1873). {LDE 243.1}

Under God the angels are all-powerful. On one occasion, in obedience to the command of Christ, they slew of the Assyrian army in one night one hundred and eighty-five thousand men.--DA 700 (1898). {LDE 243.2}

The same angel who had come from the royal courts to rescue Peter had been the messenger of wrath and judgment to Herod. The angel smote Peter to arouse him from slumber. It was with a different stroke that he smote the wicked king, laying low his pride and bringing upon him the punishment of the Almighty. Herod died in great agony of mind and body, under the retributive judgment of God.--AA 152 (1911). {LDE 243.3}

A single angel destroyed all the first-born of the Egyptians and filled the land with mourning. When David offended against God by numbering the people, one angel caused that terrible destruction by which his sin was punished. The same destructive power exercised by holy angels when God commands, will be exercised by evil angels when He permits. There are forces now ready, and only waiting the divine permission, to spread desolation everywhere.--GC 614 (1911). {LDE 243.4}

The depths of the earth are the Lord's arsenal, whence were drawn weapons to be employed in the destruction of the old world. Waters gushing from the earth united with the waters from heaven to accomplish the work of desolation. Since the Flood, fire as well as water has been God's agent to destroy very wicked cities. These judgments are sent that those who lightly regard God's law and trample upon His authority may be led to tremble before His power and to confess His just sovereignty. As men have beheld burning mountains pouring forth fire and flames and torrents of melted ore, drying up rivers, overwhelming populous cities, and everywhere spreading ruin and desolation, the stoutest heart has been filled with terror and infidels and blasphemers have been constrained to acknowledge the infinite power of God. {PP 109.1}

Before the flood there were immense forests. The trees were many times larger than any trees which we now see. They were of great durability. They would know nothing of decay for hundreds of years. At the time of the flood these forests were torn up or broken down and buried in the earth. In some places large quantities of these immense trees were thrown together and covered with stones and earth by the commotions of the flood. They have since petrified and become coal, which accounts for the large coal beds which are now found. This coal has produced oil. God causes large quantities of coal and oil to ignite and burn. Rocks are intensely heated, limestone is burned, and iron ore melted. Water and fire under the surface of the earth meet. The action of water upon the limestone adds fury to the intense heat, and causes earthquakes, volcanoes and fiery issues. The action of fire and water upon the ledges of rocks and ore, causes loud explosions which sound like muffled thunder. These wonderful exhibitions will be more numerous and terrible just before the coming of Christ and the end of the world, as signs of its speedy destruction. {3SG 79.1}

Coal and oil are generally to be found where there are no burning mountains or fiery issues. When fire and water under the surface of the earth meet, the fiery issues cannot give sufficient vent to the heated elements beneath. The earth is convulsed--the ground trembles, heaves, and rises into swells or waves, and there are heavy sounds like thunder underground. The air is heated and suffocating. The earth quickly opens, and I saw villages, cities and burning mountains carried down together into the earth. {3SG 80.1}

God controls all these elements; they are his instruments to do his will; he calls them into action to serve his purpose. These fiery issues have been, and will be his agents to blot out from the earth very wicked cities. Like Korah, Dathan and Abiram they go down alive into the pit. These are evidences of God's power. Those who have beheld these burning mountains have been struck with terror at the grandeur of the scene-- pouring forth fire, and flame, and a vast amount of melted ore, drying up rivers and causing them to disappear. They have been filled with awe as though they were beholding the infinite power of God. {3SG 80.2}

These manifestations bear the special marks of God's power, and are designed to cause the people of the earth to tremble before him, and to silence those, who like Pharaoh would proudly say, "Who is the Lord that I should obey his voice?" Isaiah refers to these exhibitions of God's power where he exclaims, "Oh that thou wouldest rend the heavens, that thou wouldest come down, that the mountains might flow down at thy presence as when the melting fire burneth. The fire causeth the waters to boil, to make thy name known to thine adversaries, that the nations may tremble at thy presence. When thou didst terrible things which we looked not for, thou camest down, the mountains flowed down at thy presence. {3SG 81.1}

"The Lord is slow to anger, and great in power, and will not at all acquit the wicked. The Lord hath his way in the whirlwind and in the storm, and the clouds are the dust of his feet. He rebuketh the sea, and maketh it dry and drieth up all the rivers. Bashan languisheth, and Carmel, and the flower of Lebanon languisheth. The mountains quake at him, and the hills melt, and the earth is burned at his presence, yea, the world, and all that dwell therein. Who can stand before his indignation? and who can abide in the fierceness of his anger? His fury is poured our like fire, and the rocks are thrown down by him. {3SG 81.2}

"Bow thy heavens, O, Lord, and come down. Touch the mountains, and they shall smoke. Cast forth lightning, and scatter them. Shoot out thine arrows, and destroy them." {3SG 81.3}

Greater wonders than have yet been seen will be witnessed by those upon the earth a short period previous to the coming of Christ. "And I will show wonders in the heavens above, and signs in the earth beneath, blood and fire and vapour of smoke." "And there were voices and thunders and lightnings, and there was a great earthquake, such as was not since men were upon the earth, so mighty an earthquake and so great. And every island fled away, and the mountains were not found. And there fell upon men a great hail out of heaven, every stone about the weight of a talent; and men blasphemed God because of the plague of the hail, for the plague thereof was exceeding great." {3SG 82.1}

The bowels of the earth were the Lord's arsenal, from which he drew forth the weapons he employed in the destruction of the old world. Waters in the bowels of the earth gushed forth, and united with the waters from Heaven, to accomplish the work of destruction. Since the flood, God has used both water and fire in the earth as his agents to destroy wicked cities. {3SG 82.2}

In the day of the Lord, just before the coming of Christ, God will send lightnings from Heaven in his wrath, which will unite with fire in the earth. The mountains will burn like a furnace, and will pour forth terrible streams of lava, destroying gardens and fields, villages and cities; and as they pour their melted ore, rocks and heated mud into the rivers, will cause them to boil like a pot, and send forth massive rocks and scatter their broken fragments upon the land with indescribable violence. Whole rivers will be dried up. The earth will be convulsed, and there will be dreadful eruptions and earthquakes everywhere. God will plague the wicked inhabitants of the earth until they are destroyed from off it. {3SG 82.3}

It is the glory of God to be merciful, full of forbearance, kindness, goodness, and truth. But the justice shown in punishing the sinner is as verily the glory of the Lord as is the manifestation of His mercy.--RH March 10, 1904. {LDE 240.1}

God's love is represented in our day as being of such a character as would forbid His destroying the sinner. . . . The plea may be made that a loving Father would not see His children suffering the punishment of God by fire while He had the power to relieve them. But God would, for the good of His subjects and for their safety, punish the transgressor. God does not work on the plan of man. He can do infinite justice that man has no right to do before his fellow man. Noah would have displeased God to have drowned one of the scoffers and mockers that harassed him, but God drowned the vast world. Lot would have had no right to inflict punishment on his sons-in-law, but God would do it in strict justice.--12MR 207-209; 10MR 265 (1876). {LDE 240, 240}