(18) He that is perverse in his ways.--Literally, two ways. (Comp. note on Proverbs 28:6.)

At once--i.e., all of a sudden, without warning.

Verse 18. - Whoso walketh uprightly shall be saved. "Uprightly" (tamim); innocently, blamelessly (Psalm 15:2). Vulgate, simpliciter; Septuagint, δικαίως; Aquila, Symmachus, τέλειος. "He is helped (βεβοήθηται)," Septuagint. Things shall prosper with him; God will work with him, and save him in dangers temporal and spiritual. But he that is perverse in his ways shall fall at once. "He that is perverse of two ways," or "in a double way," as ver. 6. The man who is not straightforward, but vacillates between right and wrong, or pretends to be pursuing one path while he is really taking another, shall fall suddenly and without warning. בְּאֶחָת means "all at once," or "once for all," and so that nothing else is possible, equivalent to penitus. Schultens quotes Virgil, 'AEneid,' 11:418 -

"Procubuit moriens et humum semel ore momordit." Septuagint, "He that walketh in crooked ways will be entangled."

28:18. Uprightness will give men holy security in the worst times; but the false and dishonest are never safe. 19. Those who are diligent, take the way to live comfortably. 20. The true way to be happy, is to be holy and honest; not to raise an estate suddenly, without regard to right or wrong. 21. Judgment is perverted, when any thing but pure right is considered. 22. He that hastens to be rich, never seriously thinks how quickly God may take his wealth from him, and leave him in poverty. 23. Upon reflection, most will have a better opinion of a faithful reprover than of a soothing flatterer.Whoso walketh uprightly shall be saved, Or "be safe" (r) from those that seek his life, plot against him, shoot at him, as the wicked do at the upright in heart, but the Lord protects him; and it is even well with him in times of public calamities; the Lord has his chambers and hiding places for him; and he is safe from falling, as may be gathered from the opposite clause; for he walks surely, and is in the hands of Christ, and is kept by him from a final and total falling away: and he shall be saved also with an everlasting salvation; from sin, and all the effects of it; from the curse of the law, from wrath to come, from hell and damnation. Not that his upright walk is the cause of this; the moving cause of salvation is the grace of God; the procuring cause, our Lord Jesus Christ, the only Author of it: but this is a descriptive character of the persons that are and shall be saved; it is a clear case that such have the grace of God, and therefore shall have glory; See Gill on Proverbs 10:9;

but he that is perverse in his ways; "in his two ways", as in Proverbs 27:6; or many ways, and all perverse and wicked:

shall fall at once; his destruction shall come suddenly upon him, when he is not aware of it, and when he cries, Peace, peace, to himself: or in one of them; in one or other of his perverse ways.

(r) "erit salvus", Pagninus, Montanus, V. L. Mercerus, Cocceius, Gejerus.