Can you describe apodictic law as it applies to the OT law?

Apodictic law refers to timeless divine commands and not to "law applied." Thus it is "necessarily or demonstrably true; incontrovertible; clearly established or beyond dispute" since it is divinely revealed). This is so because it is not directly related to any necessary historical situation (Thou shalt, Thou shalt not; i.e., the Ten Commandments).

When the law of God is applied in different cases, we refer to it as casuistic law (If a man does such and such, then this is what the penalty will be). Casuistic law in Israel is often the development of laws for particular personal and societal needs in light of God's holy and eternal apodictic law