2 Corinthians 1:18
"But as God is true, our word toward you was not yea and nay."
Cross References (ranked by relevance)
God is faithful, by whom ye were called unto the fellowship of his Son Jesus Christ our Lord.
And to the angel of the church in Philadelphia write; These things saith he that is holy, he that is true, he that hath the key of David, he that openeth, and no man shutteth; and shutteth, and no man openeth;
And unto the angel of the church of the Laodiceans write; These things saith the Amen, the faithful and true witness, the beginning of the creation of God;
Then cried Jesus in the temple as he taught, saying, Ye both know me, and ye know whence I am: and I am not come of myself, but he that sent me is true, whom ye know not.
I have many things to say and to judge of you: but he that sent me is true; and I speak to the world those things which I have heard of him.
The God and Father of our Lord Jesus Christ, which is blessed for evermore, knoweth that I lie not.
Moreover I call God for a record upon my soul, that to spare you I came not as yet unto Corinth.
For we are not as many, which corrupt the word of God: but as of sincerity, but as of God, in the sight of God speak we in Christ.