'Confirm' in the Bible

But you shall remember the Lord your God, for it is He who is giving you power to make wealth, that He may confirm His covenant which He swore to your fathers, as it is this day.

It is not for your righteousness or for the uprightness of your heart that you are going to possess their land, but it is because of the wickedness of these nations that the Lord your God is driving them out before you, in order to confirm the oath which the Lord swore to your fathers, to Abraham, Isaac and Jacob.

‘Cursed is he who does not confirm the words of this law by doing them.’ And all the people shall say, ‘Amen.’