What is the meaning of the prohibition against making God an excuse in oaths?

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The meaning of "And do not make Allah an excuse in your oaths" (Quran 2:224) is that one should not let oaths taken by God prevent them from performing acts of righteousness, piety, or making reconciliation between people. A person is forbidden from swearing that they will not do good, be pious, or reconcile, and then refrain from doing so merely to keep their oath without breaking it (committing perjury). Instead, if one swears not to do good, they should seek the prescribed expiation and perform the righteous act. The Prophet, peace and blessings be upon him, stated that one who persists in an oath is more sinful than one who pays the expiation Allah has prescribed. If one swears an oath and then sees a better course of action, they should do the better act and make expiation for the oath.