>>714466207
Irrelevant.

Premise A: God issued the Old-Testament laws.
Premise B: God is omniscient and infallible.
Premise C: Whatever an omniscient, infallible being issues is free from error and therefore permanent.

Inference 1 (A + B + C): OT laws are error-free and permanent.

Premise D: A later text is produced by agents who are not omniscient and infallible.
Premise E: A non-omniscient agent lacks authority to amend or annul error-free, permanent laws.

Inference 2 (D + E): No later text can amend or annul OT laws.

Conclusion (4 + 7) – OT laws must be observed forever, irrespective of any subsequent writings.

Simple as. Go throw away your pants, sinner.