John Gill's Exposition of the Whole Bible
Proverbs 12:3
A man shall not be established by wickedness,.... Not any man, though he may be established in his wickedness, so as not to be rooted out of it; yet he cannot be so established by it as not to be removed from a prosperous state and condition into an unhappy and distressed one; he may seem to be in a firm and settled state of prosperity, amidst all his wickedness; be like a green bay tree, spreading itself, and seemingly immovable, when on a sudden it is blown down and rooted up, and is no more: so Babylon will seem to be in a settled state of grandeur, ease, and rest, and say, "I sit a queen, and shall see no sorrow"; when in one day, and in one hour, her destruction shall come upon her, Revelation 18:7;
but the root of the righteous shall not be moved; they are rooted and grounded in the love of God, which is immovable; they are rooted and built up in Christ, and so are as Mount Zion, which can never be removed; the root of the matter, or of grace, is in them, which can never be lost; while others wither away, because they have no root in them, these abide; and though they may be shaken with the persecutions of men, the temptations of Satan, the errors of the wicked, and their own corruptions, yet they afresh take root again downward, and bring forth fruit upward.