'Finish' in the Bible

Jesus said to them, “My food is to do the will of Him who sent Me and to completely finish His work.

But the testimony which I have is far greater than the testimony of John; for the works that the Father has given Me to finish—the very same works [that is, the miracles and proofs of My deity] that I am [now] doing—testify about Me, [by providing evidence] that the Father has sent Me.