23 Keep your heart with all diligence, For out of it is the wellspring of life.
You offspring of vipers, how can you, being evil, speak good things? For out of the abundance of the heart, the mouth speaks. The good man out of his good treasure brings out good things, and the evil man out of his evil treasure{TR adds "of the heart"} brings out evil things.
For from within, out of the hearts of men, proceed evil thoughts, adulteries, sexual sins, murders, thefts, covetings, wickedness, deceit, lustful desires, an evil eye, blasphemy, pride, and foolishness. All these evil things come from within, and defile the man."
Worthy.Bible » Commentaries » Matthew Henry Commentary » Commentary on Proverbs 4
Commentary on Proverbs 4 Matthew Henry Commentary
Chapter 4
When the things of God are to be taught precept must be upon precept, and line upon line, not only because the things themselves are of great worth and weight, but because men's minds, at the best, are unapt to admit them and commonly prejudiced against them; and therefore Solomon, in this chapter, with a great variety of expression and a pleasant powerful flood of divine eloquence, inculcates the same things that he had pressed upon us in the foregoing chapters. Here is,
So plainly, so pressingly, is the case laid before us, that we shall be for ever inexcusable if we perish in our folly.
Pro 4:1-13
Here we have,
Pro 4:14-19
Some make David's instructions to Solomon, which began v. 4, to continue to the end of the chapter; nay, some continue them to the end of the ninth chapter; but it is more probable that Solomon begins here again, if not sooner. In these verses, having exhorted us to walk in the paths of wisdom, he cautions us against the path of the wicked.
Pro 4:20-27
Solomon, having warned us not to do evil, here teaches us how to do well. It is not enough for us to shun the occasions of sin, but we must study the methods of duty.