Prov. 4:19 KJV (With Strong’s)

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19
The way
derek (Hebrew #1870)
a road (as trodden); figuratively, a course of life or mode of action, often adverb
KJV usage: along, away, because of, + by, conversation, custom, (east-)ward, journey, manner, passenger, through, toward, (high-) (path-)way(-side), whither(-soever).
Pronounce: deh'-rek
Origin: from 1869
of the wicked
rasha` (Hebrew #7563)
morally wrong; concretely, an (actively) bad person
KJV usage: + condemned, guilty, ungodly, wicked (man), that did wrong.
Pronounce: raw-shaw'
Origin: from 7561
is as darkness
'aphelah (Hebrew #653)
duskiness, figuratively, misfortune; concrete, concealment
KJV usage: dark, darkness, gloominess, X thick.
Pronounce: af-ay-law'
Origin: feminine of 651
: theyb know
yada` (Hebrew #3045)
to know (properly, to ascertain by seeing); used in a great variety of senses, figuratively, literally, euphemistically and inferentially (including observation, care, recognition; and causatively, instruction, designation, punishment, etc.) (as follow)
KJV usage: acknowledge, acquaintance(-ted with), advise, answer, appoint, assuredly, be aware, (un-)awares, can(-not), certainly, comprehend, consider, X could they, cunning, declare, be diligent, (can, cause to) discern, discover, endued with, familiar friend, famous, feel, can have, be (ig-)norant, instruct, kinsfolk, kinsman, (cause to let, make) know, (come to give, have, take) knowledge, have (knowledge), (be, make, make to be, make self) known, + be learned, + lie by man, mark, perceive, privy to, X prognosticator, regard, have respect, skilful, shew, can (man of) skill, be sure, of a surety, teach, (can) tell, understand, have (understanding), X will be, wist, wit, wot.
Pronounce: yaw-dah'
Origin: a primitive root
not at what they stumble
kashal (Hebrew #3782)
to totter or waver (through weakness of the legs, especially the ankle); by implication, to falter, stumble, faint or fall
KJV usage: bereave (from the margin), cast down, be decayed, (cause to) fail, (cause, make to) fall (down, -ing), feeble, be (the) ruin(-ed, of), (be) overthrown, (cause to) stumble, X utterly, be weak.
Pronounce: kaw-shal'
Origin: a primitive root
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Cross References

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1 Sam. 2:9• 9He will keep the feet of his saints, and the wicked shall be silent in darkness; for by strength shall no man prevail. (1 Sam. 2:9)
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Job 5:14• 14They meet with darkness in the daytime, and grope in the noonday as in the night. (Job 5:14)
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Job 12:25• 25They grope in the dark without light, and he maketh them to stagger like a drunken man. (Job 12:25)
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Job 18:5‑6,18• 5Yea, the light of the wicked shall be put out, and the spark of his fire shall not shine.
6The light shall be dark in his tabernacle, and his candle shall be put out with him.
18He shall be driven from light into darkness, and chased out of the world.
(Job 18:5‑6,18)
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Isa. 59:9‑10• 9Therefore is judgment far from us, neither doth justice overtake us: we wait for light, but behold obscurity; for brightness, but we walk in darkness.
10We grope for the wall like the blind, and we grope as if we had no eyes: we stumble at noonday as in the night; we are in desolate places as dead men.
(Isa. 59:9‑10)
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Jer. 13:16• 16Give glory to the Lord your God, before he cause darkness, and before your feet stumble upon the dark mountains, and, while ye look for light, he turn it into the shadow of death, and make it gross darkness. (Jer. 13:16)
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Jer. 23:12• 12Wherefore their way shall be unto them as slippery ways in the darkness: they shall be driven on, and fall therein: for I will bring evil upon them, even the year of their visitation, saith the Lord. (Jer. 23:12)
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Matt. 7:23• 23And then will I profess unto them, I never knew you: depart from me, ye that work iniquity. (Matt. 7:23)
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Matt. 15:14• 14Let them alone: they be blind leaders of the blind. And if the blind lead the blind, both shall fall into the ditch. (Matt. 15:14)
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John 12:35• 35Then Jesus said unto them, Yet a little while is the light with you. Walk while ye have the light, lest darkness come upon you: for he that walketh in darkness knoweth not whither he goeth. (John 12:35)
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1 John 2:11• 11But he that hateth his brother is in darkness, and walketh in darkness, and knoweth not whither he goeth, because that darkness hath blinded his eyes. (1 John 2:11)

J. N. Darby Translation

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19
The way of the wicked is as darkness: they know not at what they stumble.