receive like a child.

...But seek first the kingdom of God and his righteousness, and all these things will be added to you. - Matthew 6:33 (ESV)

.."Let the children come to me; do not hinder them, for to such belongs the kingdom of God. Truly, I say to you, whoever does not receive the kingdom of God like a child shall not enter it." And he took them in his arms and blessed them, laying his hands on them. - Mark 10:14-16 (ESV)