'Establish' in the Bible

that I may establish the oath which I sware unto your fathers, to give them a land flowing with milk and honey, as at this day. Then answered I, and said, Amen, O Jehovah.

Thus saith Jehovah that doeth it, Jehovah that formeth it to establish it; Jehovah is his name:

Thus saith Jehovah of hosts, the God of Israel, saying, Ye and your wives have both spoken with your mouths, and with your hands have fulfilled it, saying, We will surely perform our vows that we have vowed, to burn incense to the queen of heaven, and to pour out drink-offerings unto her: establish then your vows, and perform your vows.