Albert Barnes Commentary Proverbs 15:19

"The way of the sluggard is as a hedge of thorns; But the path of the upright is made a highway." — Proverbs 15:19 (ASV)

The slothful goes on his journey, and for him the path is densely covered with thorns, briars, and fences, through which he cannot force his way. For the “righteous” (better, upright), the same path is like the broad, raised causeway of the king’s highway. Compare Isaiah 40:3.