'Unfaithfully' in the Bible

And it happened [that] in the fifth year of King Rehoboam (for they had acted unfaithfully against Yahweh), Shishak the king of Egypt came up against Jerusalem

But when he became strong, he grew arrogant and it led to his own destruction. He acted unfaithfully against the Lord his God by going into the Lord’s sanctuary to burn incense on the incense altar.

They took their stand against King Uzziah and said, “Uzziah, you have no right to offer incense to the Lord—only the consecrated priests, the descendants of Aaron, have the right to offer incense. Leave the sanctuary, for you have acted unfaithfully! You will not receive honor from the Lord God.”

For Yahweh subdued Judah for the sake of Ahaz, king of Israel, for he created disorder in Judah and acted unfaithfully against Yahweh.

And in the time of his distress, King Ahaz continued to act unfaithfully against Yahweh.

For our ancestors acted unfaithfully and did evil in the sight of Yahweh our God, and have forsaken him and turned away their faces from the dwelling place of Yahweh. {They have turned their backs} [on it].

We have prepared and consecrated all the items that King Ahaz removed during his reign when he acted unfaithfully. They are in front of the altar of the Lord."

Do not be like your fathers and like your brothers, who acted unfaithfully before Yahweh, the God of their ancestors, so that he made them as a desolation, as you see.