Proverbs 12:28

The way of religion is here recommended to us, 1. As a straight, plain, easy way; it is the way of righteousness. God's commands (the rule we are to walk by) are all holy, just, and good. Religion has right reason and equity on its side; it is a path-way, a way which God has cast up for us (Isa 35:8); it is a highway, the king's highway, the King of kings' highway, a way which is tracked before us by all the saints, the good old way, full of the footsteps of the flock. 2. As a safe, pleasant, comfortable way. (1.) There is not only life at the end, but there is life in the way; all true comfort and satisfaction. The favour of God, which is better than life; the Spirit, who is life. (2.) There is not only life in it, but so as that in it there is no death, none of that sorrow of the world which works death and is an allay to our present joy and life. There is no end of that life that is in the way of righteousness. Here there is life, but there is death too. In the way of righteousness there is life, and no death, life and immortality.

— Matthew Henry's Concise Commentary (public domain)

(Compare Pro 8:8, Pro 8:20, &c.). A sentiment often stated; here first affirmatively, then negatively. Next: Proverbs Chapter 13

— Jamieson-Fausset-Brown Commentary (public domain)