'Allegiance' in the Bible

Of the tribe of Benjamin, the relatives of [King] Saul, 3,000; for until now the majority of them had kept their allegiance to the house of Saul.

All of the leaders and warriors, and also all the sons of King David, pledged allegiance to King Solomon.

How long, O Lord? Will You be angry forever?Will Your jealousy [which cannot endure a divided allegiance] burn like fire?

My son, fear the Lord and the king;And do not associate with those who are given to change [of allegiance, and are revolutionary],

In that day five cities in the land of Egypt will speak the language of [the Hebrews of] Canaan and swear allegiance to the Lord of hosts. One [of them] will be called the City of Destruction.

“I have sworn [an oath] by Myself,The word is gone out of My mouth in righteousnessAnd shall not return,That to Me every knee shall bow, every tongue shall swear [allegiance].

“Hear this, O house of Jacob, you who are called by the name of IsraelAnd who come from the seed of Judah,You who swear [allegiance] by the name of the LordAnd invoke the God of Israel,But not in truth (sincerity) nor in righteousness [with moral and spiritual integrity].

It will seem like a false divination in their eyes, those who have sworn solemn oaths [of allegiance to Nebuchadnezzar]. But he will remind them of their guilt [by rebelling and violating their oath], that they may be caught.