Strong's #386: 'eythan (pronounced ay-thawn')

or (shortened) ethan {ay-thawn'}; from an unused root (meaning to continue); permanence; hence (concrete) permanent; specifically a chieftain:--hard, mighty, rough, strength, strong.

Brown-Driver-Briggs Hebrew Lexicon:

'êythân

1) perpetual, constant, perennial, ever-flowing

1a) ever-flowing (of a stream)

1b) permanence, permanent, enduring (figuratively)

Part of Speech: adjective

Relation: from an unused root (meaning to continue)

Usage:

This word is used 13 times:

 

Genesis 49:24: "But his bow abode in strength, and the arms of his hands were made strong by the hands"
Exodus 14:27: "the sea, and the sea returned to his strength when the morning appeared; and the Egyptians fled"
Numbers 24:21: "and took up his parable, and said, Strong is thy dwelling place, and thou puttest thy nest in a rock."
Deuteronomy 21:4: "the heifer unto a rough valley, which is neither eared"
Job 12:19: "princes and overthroweth the mighty."
Job 33:19: "his bed, and the multitude of his bones with strong"
Psalms 74:15: "and the flood: thou driedst up mighty rivers."
Proverbs 13:15: "favor: but the way of transgressors is hard."
Jeremiah 5:15: "of Israel, saith the LORD: it is a mighty nation, it is an ancient"
Jeremiah 49:19: "from the swelling of Jordan against the habitation of the strong: but I will suddenly make him run away"
Jeremiah 50:44: "from the swelling of Jordan unto the habitation of the strong: but I will make them suddenly run away"
Amos 5:24: "run down and righteousness as a mighty stream."
Micah 6:2: "the LORD's controversy, and ye strong foundations of the earth: for the LORD"