2 Corinthians 1:20-22 NIV

[20] For no matter how many promises God has made, they are “Yes” in Christ. And so through him the “Amen” is spoken by us to the glory of God. [21] Now it is God who makes both us and you stand firm in Christ. He anointed us, [22] set his seal of ownership on us, and put his Spirit in our hearts as a deposit, guaranteeing what is to come.