2 Corinthians 1:18–22
18 As surely as God is faithful, our word to you has not been Yes and No. 19 For the Son of God, Jesus Christ, whom we preached among you, Silvanus and Timothy and I, was not Yes and No; but in him it is always Yes. 20 For all the promises of God find their Yes in him. That is why we utter the Amen through him, to the glory of God. 21 But it is God who establishes us with you in Christ, and has commissioned us; 22 he has put his seal upon us and given us his Spirit in our hearts as a guarantee.