1 Corinthians 9:20
And unto the Jews I became as a Jew, that I might gain the Jews; to them that are under the law, as under the law, that I might gain them that are under the law;
1 Corinthians 9:22
To the weak became I as weak, that I might gain the weak: I am made all things to all men, that I might by all means save some.
1 Corinthians 13:11
When I was a child, I spake as a child, I understood as a child, I thought as a child: but when I became a man, I put away childish things.