Genesis 1:5עֶרֶב
God called the light “day,” and the darkness He called “night.” And there was evening, and there was morning—the first day.
Exodus 12:18בָּעֶרֶב
In the first month you are to eat unleavened bread, from the evening of the fourteenth day until the evening of the twenty-first day.
Leviticus 6:20בָּעָרֶב
“This is the offering that Aaron and his sons must present to the LORD on the day he is anointed: a tenth of an ephah of fine flour as a regular grain offering, half of it in the morning and half in the evening.
Numbers 9:3הָעֲרְבַּיִם
You are to observe it at the appointed time, at twilight on the fourteenth day of this month, in accordance with its statutes and ordinances.”
2 Chronicles 2:4וְלָעֶרֶב
Behold, I am about to build a house for the Name of the LORD my God to dedicate to Him for burning fragrant incense before Him, for displaying the showbread continuously, and for making burnt offerings every morning and evening as well as on the Sabbaths, New Moons, and appointed feasts of the LORD our God. This is ordained for Israel forever.
Psalm 30:5בָּעֶרֶב
For His anger is fleeting, but His favor lasts a lifetime. Weeping may stay the night, but joy comes in the morning.

Brown-Driver-Briggs

עֶ֫רֶב 131 n.[m.] (sun)set, evening

a. evening, orig. sunset

b. du. in phrase between two evenings, i.e. prob. between sunset and dark

2. (late poet.) = night

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.