Read 1 Kings 8:22-30.
"And he said, Lord God of Israel, there is no God like thee, in heaven above, or on earth beneath, who keepest covenant and mercy with thy servants that walk before thee with all their heart" (v. 23).
The theme is woven throughout Scripture: God is faithful and merciful. After God promised Abraham and Sarah innumerable descendants, Abraham broke faith by having a son through Hagar. Yet, God was faithful to grant him the "child of promise" through Sarah. After God established a covenant with the descendents of Abraham, Israel again and again broke that covenant by worshiping other gods. Yet, God mercifully called them into repentance through the judges and prophets. When God promised a never-ending rule of the family line of David, He kept that promise. Although many in the royal line would break that covenant resulting in the exile of the Israelites, God established an unending kingdom in the person of Jesus, whose earthly mother descended from the line of David. In this act of faithfulness, God has shown mercy not just to the covenant breakers of the past, but also to all humanity, including you and me.
God remains faithful and merciful. "Know therefore that the LORD thy God, he is God, the faithful God, which keepeth covenant and mercy with them that love him and keep his commandments to a thousand generations" (Deuteronomy 7:9). (Lyle A.W)
"God is faithful, ever faithful;
He will surely keep his word;
To the uttermost faithful filling
Ev'ry promise I have heard."
We can trust our covenant-keeping God.