This classic “University Lutheran question” gets at the notion of what Jesus is getting at when He calls His disciples “little children”. 

Sermon Text: Matthew 11:25-30 

Come to Me, and I Will Give You Rest

[25] At that time Jesus declared, “I thank you, Father, Lord of heaven and earth, that you have hidden these things from the wise and understanding and revealed them to little children; [26] yes, Father, for such was your gracious will. [27] All things have been handed over to me by my Father, and no one knows the Son except the Father, and no one knows the Father except the Son and anyone to whom the Son chooses to reveal him. [28] Come to me, all who labor and are heavy laden, and I will give you rest. [29] Take my yoke upon you, and learn from me, for I am gentle and lowly in heart, and you will find rest for your souls. [30] For my yoke is easy, and my burden is light.” (ESV)