In Knowing Scripture, R.C. Sproul wrote: “What if, after careful consideration of a biblical mandate, we remain uncertain as to its character as a principle or custom . . . Would it be better to treat a possible custom as a principle and be guilty of being over-scrupulous in our design to obey God? Or would it be better to treat a possible principle as a custom and be guilty of being unscrupulous in denoting a transcendent requirement of God to the level of a mere human convention? I hope the answer is obvious” (p. 111).
If a man does not repent, He will sharpen His sword; He has bent His bow and made it ready. -v.12
I will give thanks to the LORD according to His righteousness And will sing praise to the name of the LORD Most High. -v.17
Whatever is in error must be repented of, which means correcting it at whatever the cost. And whatever the cost, He is worth it. Praise God He is worth it.