As for such as turn aside unto their crooked ways - The wicked. Those who leave the right or straight path, and wander in forbidden ways. The word here rendered “crooked ways” occurs nowhere else except in Judges 5:6, where it is rendered “by-ways,” meaning unfrequented paths or roads; narrow and crooked paths, remote from the highways, or the ways commonly traversed. Hence, the word means also paths of sin - as deviations from the straight road which man should travel.
The Lord shall lead them forth with the workers of iniquity - They shall be dealt with as sinners. They shall be punished. The allusion is to backsliders; to those who forsake the worship of God; who cease to do “good;” who, though among the professed people of God, wander from him in by-paths and forbidden ways. The idea is, that their profession of religion will not save them; that they will not obtain the divine blessing merely because they are avowedly the people of God, or are numbered among them, but that they will be treated as all other sinners are: they will be led forth with all the wicked, and will be treated like them. Compare Ezekiel 33:12-13; Matthew 7:22-23; Matthew 25:11-12.
But peace shall be upon Israel - Upon the real Israel; upon the true people of God. Galatians 6:16; Isaiah 54:13; Isaiah 55:12; Isaiah 57:2; Isaiah 66:12; John 14:27; John 16:33; Ephesians 2:17; Philippians 4:7.