'Effect' in the Bible

But keep in mind the Lord your God: for it is he who gives you the power to get wealth, so that he may give effect to the agreement which he made by his oath with your fathers, as at this day.

Not for your righteousness or because your hearts are upright are you going in to take their land; but because of the evil-doing of these nations the Lord your God is driving them out from before you, and to give effect to his oath to your fathers, Abraham, Isaac, and Jacob.

When you take an oath to the Lord, do not be slow to give effect to it: for without doubt the Lord your God will make you responsible, and will put it to your account as sin