Keil & Delitzsch

On הרף (let alone), imper. apoc. Hiph., instead of הרפּה, vid., Ges. ֗75, rem. 15. אך להרע is a clause to itself (cf. Pro 11:24; Psa 21:5; Psa 22:16): it tends only to evil-doing, it ends only in thy involving thyself in sin. The final issue, without any need that thou shouldst turn sullen, is that the מרעים, like to whom thou dost make thyself by such passionate murmuring and displeasure, will be cut off, and they who, turning from the troublous present, make Jahve the ground and aim of their hope, shall inherit the land (vid., Psa 25:13). It is the end, the final and consequently eternal end, that decides the matter.