Exodus 18:20וְהִזְהַרְתָּה
Teach them the statutes and laws, and show them the way to live and the work they must do.
2 Kings 6:10וְהִזְהִירוֹ
So the king of Israel sent word to the place the man of God had pointed out. Time and again Elisha warned the king, so that he was on his guard in such places.
2 Chronicles 19:10וְהִזְהַרְתֶּם
For every dispute that comes before you from your brothers who dwell in their cities—whether it regards bloodshed or some other violation of law, commandments, statutes, or ordinances—you are to warn them, so that they will not incur guilt before the LORD and wrath will not come upon you and your brothers. Do this, and you will not incur guilt.
Psalm 19:11נִזְהָר
By them indeed Your servant is warned; in keeping them is great reward.
Ecclesiastes 4:13לְהִזָּהֵר
Better is a poor but wise youth than an old but foolish king who no longer knows how to take a warning.
Ezekiel 3:17וְהִזְהַרְתָּ
“Son of man, I have made you a watchman for the house of Israel. Whenever you hear a word from My mouth, give them a warning from Me.

Brown-Driver-Briggs

[זָהַר] vb. only Hiph., Niph.

Hiph. instruct, teach, warn

Niph. be instructed, admonished, warned

Sources: Brown-Driver-Briggs (1906, public domain) from the Open Scriptures Hebrew Lexicon (CC BY 4.0), glosses from STEPBible TBESH (CC BY 4.0); STEPBible TAHOT (Hebrew Bible, Leningrad Codex, CC BY 4.0); the Berean Standard Bible (public domain). Reformatted by Word Study, wording unchanged. All sources and licenses.