'Faithful' in the Bible

How has a faithful city become like a whore? Full of justice, righteousness lodged in her, but now murderers.

And I will restore your judges, as at the first, and your counselors, as at the beginning. After this {you will be called} the city of righteousness, faithful city.

Thus says Yahweh, the redeemer of Israel, his holy one, to the one who despises life, to the one who abhors [the] nation, to [the] slave of rulers: "Kings shall see and stand up; princes, and they shall bow down, for the sake of Yahweh, who [is] faithful, the holy one of Israel, and he has chosen you."