2 Corinthians 1:18-22

We assure you that as certainly as God is faithful, we have never given you a message meaning both "yes" and "no." And Jesus Christ, the Son of God, whom Silas, Timothy and I preached to you, does not waver between "yes" and "no," but in him it has always been "Yes!" Every promise of God finds its divine affirmation in him, and through him we say, "Amen!" to the glory of God. And it is God who gives both you and us the ability to stand firm in Christ, annointing us with his seal, a living guarantee, the Holy Spirit in our hearts.