'Incurable' in the Bible

Why is my pain perpetual, and my wound incurable? It refuseth to be healed. Wilt thou be altogether unto me as a treacherous spring, as waters that fail?

The heart is deceitful above all things, and incurable; who can know it?

For thus saith Jehovah: Thy bruise is incurable, thy wound is grievous.

Why criest thou because of thy bruise? thy sorrow is incurable; for the greatness of thine iniquity, because thy sins are manifold, I have done these things unto thee.