'Unfailing' in the Bible

And the king said, “Is there no longer anyone left of the house (family) of Saul to whom I may show the goodness and graciousness of God?” Ziba replied to the king, “There is still a son of Jonathan, [one] whose feet are crippled.”

Surely goodness and mercy and unfailing love shall follow me all the days of my life,And I shall dwell forever [throughout all my days] in the house and in the presence of the Lord.

“Sell your possessions (show compassion) and give [donations] to the poor. Provide money belts for yourselves that do not wear out, an unfailing and inexhaustible treasure in the heavens, where no thief comes near and no moth destroys.

It is my own eager expectation and hope, that [looking toward the future] I will not disgrace myself nor be ashamed in anything, but that with courage and the utmost freedom of speech, even now as always, Christ will be magnified and exalted in my body, whether by life or by death.

Above all, have fervent and unfailing love for one another, because love covers a multitude of sins [it overlooks unkindness and unselfishly seeks the best for others].