25 At that time Jesus said, "I praise you, Father, Lord of heaven and earth, because you have hidden these things from the wise and learned, and revealed them to little children. 26Yes, Father, for this was your good pleasure.
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28"Come to me, all you who are weary and burdened, and I will give you rest. 29Take my yoke upon you and learn from me, for I am gentle and humble in heart, and you will find rest for your souls. 30For my yoke is easy and my burden is light."
(Matt 11)
We had this at a funeral of a child in our church
or this one:
1At that time the disciples came to Jesus and asked, "Who is the greatest in the kingdom of heaven?"
2He called a little child and had him stand among them. 3And he said: "I tell you the truth, unless you change and become like little children, you will never enter the kingdom of heaven. 4Therefore, whoever humbles himself like this child is the greatest in the kingdom of heaven.
5"And whoever welcomes a little child like this in my name welcomes me.
(Matt 18)
I really like the Winnie the Pooh one too