Jesus showed that being great in God’s sight means being as humble as a child.
1 About that time we disciples approached Jesus and said, "Who among us will be the most important when God [MTY/EUP] makes you king?" 2 Jesus called a child to come, and he placed that child in our midst. 3 He said, "Think about this: If you (pl) do not change the way you(pl) think and become as humble as little children, you (pl) will surely not go to the place where God [MTY/EUP] rules. 4 The people who become as humble as this child or any child is, will be the most important people among those over whom God rules. 5 Also, when those who, because they love me, welcome a child like this one, God considers that they are welcoming me."
Matthew 18:6-9
Jesus taught that God is deeply concerned if even one person goes astray from him.
10,11 "Make an effort that you (pl) do not despise even one of these children. I tell you (pl) truly that since the angels live in heaven in the presence of my Father, they will report to him if you mistreat the children.18:10-11 Some Greek manuscripts add verse 11, ‘For the Son of Man came to seek the lost’.