2 Corinthians 1:17-19

Darby Translation

¹⁷ Having therefore this purpose, did I then use lightness? Or what I purpose, do I purpose according to flesh, that there should be with me yea yea, and nay nay?

¹⁸ Now God [is] faithful, that our word to you is not yea and nay.

¹⁹ For the Son of God, Jesus Christ, he who has been preached by us among you (by me and Silvanus and Timotheus), did not become yea and nay, but yea *is* in him.