Better, there is a grievous correction, that is, nothing less than death, to him who forsakes the way.

Correction is grievous.— Rather, There is a grievous correction for him who forsakes the (right) way; first of a…

Correction [is] grievous unto him that forsakes the way
The right way, the way of God; the way of his commandments: …

The one who hates reproof will perish in his sins, since he would not be separated from them.