God Always Keeps His Promise.

2 Corinthians 1:20 "For all the promises of God in Him are Yes, and in Him Amen, to the glory of God through us"

And the promises of God in Christ are not yea and nay, but yea and amen. There is an inviolable constancy and unquestionable sincerity and certainty in all the parts of the gospel of Christ. If in the promises that the ministers of the gospel make as common men, and about their own affairs, they see cause sometimes to vary from them, yet the promises of the gospel covenant, which they preach, stand firm and inviolable. Bad men are false; good men are fickle; but God is true, neither fickle nor false. The apostle, having mentioned the stability of the divine promises, makes a digression to illustrate this great and sweet truth, that all the promises of God are yea and amen. For, They are the promises of the God of truth 2 Corinthians 1:20, of him that cannot lie, whose truth as well as mercy endureth for ever. They are made in Christ Jesus 2 Corinthians 1:20, the Amen, the true and faithful witness; he hath purchased and ratified the covenant of promises, and is the 1 surety of the covenant, Hebrews 7:22. They are confirmed by the Holy Spirit. - Matthew Henry