'Oath' in the Bible

“Why should I [overlook these offenses and] forgive you?Your children have abandoned (rejected) MeAnd sworn [their oaths] by those who are not gods.When I had fed them until they were full [and bound them to Me by a promise],They committed [spiritual] adultery,Assembling in troops at the houses of prostitutes (idols).

that I may complete the oath which I swore to your fathers, to give them a land [of plenty] flowing with milk and honey, as it is this day.”’” Then I answered, “Amen (so be it), O Lord.”