'Fidelity' in the Bible

"So now, our God -- the great, powerful, and awesome God, who keeps covenant fidelity -- do not regard as inconsequential all the hardship that has befallen us -- our kings, our leaders, our priests, our prophets, our ancestors, and all your people -- from the days of the kings of Assyria until this very day!

Let your fountain (wife) be blessed [with the rewards of fidelity],And rejoice in the wife of your youth.

By mercy and lovingkindness and truth [not superficial ritual] wickedness is cleansed from the heart,And by the fear of the Lord one avoids evil.

“Because he who blesses himself on the earthWill bless himself by the God of truth and faithfulness;And he who swears [an oath] on the earthWill swear by the God of truth and faithfulness;Because the former troubles are forgotten,And because they are hidden from My sight.

Run ye to and fro through the streets of Jerusalem, and see now, and know, and seek in the broadways thereof, if ye can find a man, if there be any that doeth justice, that seeketh fidelity; and I will pardon it.

Jehovah, are not thine eyes upon fidelity? Thou hast smitten them, but they are not sore; thou hast consumed them, they have refused to receive correction: they have made their faces harder than a rock; they have refused to return.

And thou shalt say unto them, This is the nation which hath not hearkened unto the voice of Jehovah their God, nor received correction; fidelity is perished, and is cut off from their mouth.

And they bend their tongue, their bow of falsehood, and not for fidelity are they valiant in the land; for they proceed from evil to evil, and they know not me, saith Jehovah.

We have given the hand [as a pledge of fidelity and submission] to Egypt and Assyria to get enough bread.