Ezekiel 16:15

However, Jerusalem became self-centered and unfaithful to the Lord; she forgot Him when she became preoccupied with His blessings (cf. Deuteronomy 6:10-12; Deuteronomy 8). She went after every people that passed by rather than remaining faithful to Yahweh. Under King Solomon, Jerusalem became the greatest city of her day, but Solomon led the Jerusalemites into spiritual adultery by making alliances (covenants) with other nations and by establishing idolatry in the land (1 Kings 11:1-13; cf. Deuteronomy 17:14-20).