Proverbs 15:3

beholding--watching (compare Pro 5:21; Psa 66:7).

The eyes of the Lord are in every place,.... Which are expressive of his omniscience, of the full, clear, distinct, and perfect knowledge, which he has of all creatures and things; so that nothing is hid from him, but all open and manifest to him; as they are to Christ the essential Word, Heb 4:13; and also of the providence of God with respect to all persons in general, and to his own people in particular; and as he is infinite and immense, omnipresent and in all places of the world, so his omniscience and providence reach everywhere, to places most distant and secret, and to persons in them, who cannot be concealed from him, since he fills heaven and earth, Jer 23:23; beholding the evil and the good; meaning not evil things and good things, though that is true; the one he beholds with dislike, the other with pleasure; but evil men and good men: he beholds them as from a watch tower, as the word (u) signifies, from above, from heaven, where he is; see Psa 33:13. By "evil" men may be meant both profane sinners and carnal professors; such as are more openly wicked, and declare their sin, as Sodom, or more secretly so; he sees into all the wickedness there is in their hearts, all their secret devices against his people; the works done by them in the dark, as well as their more open ones; and his eyes are upon all of them, to bring them into judgment at the last day: his eyes are particularly on the proud, to abase them; such as are under a disguise of religion, and have a form of godliness, he has his eyes upon; he sees through all their disguises; he knows on what foot they took up their profession; he discerns between that and true grace; he sees how they retain their lusts with their profession; observes the springs and progress of their apostasy; and will fix his eyes…

The great truths of divinity are of great use to enforce the precepts of morality, and none more than this - That the eye of God is always upon the children of men. 1. An eye to discern all, not only from which nothing can be concealed, but by which every thing is actually inspected, and nothing overlooked or looked slightly upon: The eyes of the Lord are in every place; for he not only sees all from on high (Psa 33:13), but he is every where present. Angels are full of eyes (Rev 4:8), but God is all eye. It denotes not only his omniscience, that he sees all, but his universal providence, that he upholds and governs all. Secret sins, services, and sorrows, are under his eye. 2. An eye to distinguish both persons and actions. He beholds the evil and the good, is displeased with the evil and approves of the good, and will judge men according to the sight of his eyes, Psa 1:6; Psa 11:4. The wicked shall not go unpunished, nor the righteous unrewarded, for God has his eye upon both and knows their true character; this speaks as much comfort to saints as terror to sinners.

15:3 Knowing that thethe eyes of the Lord is watching everywhere is motivation for wise behavior.