I appreciate what Jesus said. But, this has clouded the issue. First, you claimed the True Church of God was the kids being kind to you.
If you read all of it you would see that I also pointed out that they were doing what Jesus told them to do.
Luke 18
17 Verily I say unto you, Whosoever shall not receive the kingdom of God as a little child shall in no wise enter therein.
We need to have the same faith in Christ as a child should have in their parents.
Well, there you have it...you saw children who had "faith in their parents" (not sure how you saw that "faith", but your xray vision saw "faith" in the kids). You have determined from the Scriptures that the Gospel is having faith in Jesus the same way children have faith in their parents. Thus, you are certain you have seen a body of believers when you saw the children.
Interesting...nothing about sin, nothing about the blood shed for the sin, nothing about God choosing them before the foundation of the world, nothing about the work of the Holy Spirit. Your view omits most of what Paul taught as the Gospel of Jesus, after the cross. You have a very unusual take on the Gospel.