'Confirm' in the Bible

Now formerly in Israel this was the custom concerning redeeming and exchanging property. To confirm a transaction, a man pulled off his sandal and gave it to the other. This was the way of confirming and attesting in Israel.

Now, O Lord God, confirm forever the word [of the covenant] that You have spoken in regard to Your servant and his house (royal dynasty); and do just as You have spoken,

Behold, while you are still there speaking with the king, I will come in after you and confirm your words.”

Pul, [Tiglath-pileser III] king of Assyria, came against the land [of Israel], and Menahem gave Pul a thousand talents of silver [as a bribe], so that he might help him to strengthen his control of the kingdom.

The king stood by the pillar and made a covenant before the Lord, to walk after the Lord and to keep His commandments, His testimonies, and His statutes with all his heart and soul, to confirm the words of this covenant that were written in this book. And all the people entered into the covenant.

to establish these days of Purim [to be observed] at their appointed times, just as Mordecai the Jew and Queen Esther had established for them, and as they had established for themselves and for their descendants with instructions regarding their times of fasting and their lamentations (expressions of needing help).

You, O God, sent abroad plentiful rain;You confirmed Your inheritance when it was parched and weary.

And let the [gracious] favor of the Lord our God be on us;Confirm for us the work of our hands—Yes, confirm the work of our hands.

Establish Your word and confirm Your promise to Your servant,As that which produces [awe-inspired] reverence for You.

thus says the Lord of hosts, the God of Israel, as follows: ‘You and your wives have both declared with your mouth and fulfilled it with your hand, saying, “We will certainly perform our vows that we have vowed, to burn sacrifices to the queen of heaven (Ishtar) and to pour out drink offerings to her.” Surely then confirm your vows and go ahead and perform your vows! [If you intend to defy all My warnings, proceed!]’

“I will make a covenant of peace with them and will eliminate the predatory animals from the land so that they may live securely in the wilderness and sleep [safely] in the woods.

“Also I, in the first year of Darius the Mede, I (Gabriel) arose to be an encouragement and a protection for him.

“Flight will be lost to the swift [so they will be unable to escape],And the strong shall not strengthen nor maintain his power,Nor shall the mighty man save his own life.