II Corinthians 12:12-14

Truly the signs of an apostle were accomplished among you with all perseverance, in signs and wonders and mighty deeds. For what is it in which you were inferior to other churches, except that I myself was not burdensome to you? Forgive me this wrong! Now for the third time I am ready to come to you. And I will not be burdensome to you; for I do not seek yours, but you. For the children ought not to lay up for the parents, but the parents for the children.