'Offer' in the Bible

which is really not another [gospel]; but there are [obviously] some [people masquerading as teachers] who are disturbing and confusing you [with a misleading, counterfeit teaching] and want to distort the gospel of Christ [twisting it into something which it absolutely is not].

Brothers and sisters, I offer an example from everyday life: When a covenant has been ratified, even though it is only a human contract, no one can set it aside or add anything to it.