He who talks on his own authority aims at his own credit, but he who aims at the credit of the person who sent him, he is sincere, and there is no dishonesty in him.
If anyone preaches, he must preach as one who utters the words of God; if anyone renders some service, it must be as one who is supplied by God with power, so that in everything God may be glorified through Jesus Christ. The glory and the dominion are his for ever and ever: Amen.