What is more important? To become the people of God or to become a member of the SDA church? I think if we say to some one you must become a SDA member in order to be saved, our church would go empty, and people would think we are teaching heresy.
Therefore, the true definition of people of God is more important than a membership.

In His love

James S

We are talking about who are the people of God; they are those who know God according to Tom E, they are those who keep the commandments of God with the faith of Jesus according to Rosangela and me, they are the members of the SDA’s church according to M.M, I think we may say also that they are those lambs who stands at Christ right hand at his second coming, they who loved their neighbors (Matthew 25:31-40).

Since the principle of heaven is based on the character of God, his agape love, we know that our fitness for heaven is having this love in our hearts.

How could we get our fitness for heaven, the agape love of God in our hearts?

In His love

James S

What I pointed out is that God has a denominated, or visible, body and an invisible one. The invisible one is constituted by those how know God. The description "those who keep the commandments of God and the faith of Jesus" could either be visible or invisible; you'd have to clarify your meaning. If you have in mind the visible body, that would be the SDA church, wouldn't it? MM's quotes would come into play here. As EGW puts it, "What other group of people can you point to" etc.

In terms of salvation, what matters is knowing God. To know God is to love Him, and love is the fulling of the law. Therefore those who know God will keep His commandments and have the faith of Jesus.