'Allegiance' in the Bible

At that time, there will be five cities in the land of Egypt that speak the language of Canaan and swear allegiance to the LORD of the Heavenly Armies. One of them will be called the City of the Sun.

By Myself I have sworn;Truth has gone from My mouth,a word that will not be revoked:Every knee will bow to Me,every tongue will 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].