2 Corinthians 11:7-9

Or did I commit a sin in humbling myself so that you might be exalted, because I preached God’s gospel to you free of charge? I robbed other churches by accepting support from them in order to serve you. And when I was with you and was in need, I did not burden anyone, for the brothers who came from Macedonia supplied my need. So I refrained and will refrain from burdening you in any way.