Exodus 12:6

You must keep it until the fourteenth day of the month, when the whole assembly of the congregation of Israel will slaughter the animals at twilight.

Note Hebrew between the two evenings

BSB · Berean Standard Bible
And ye shall keep it up until the fourteenth day of the same month: and the whole assembly of the congregation of Israel shall kill it in the evening.

Note in…: Heb. between the two evenings

KJV · King James Version
You shall keep it until the fourteenth day of the same month; and the whole assembly of the congregation of Israel shall kill it at evening.
WEB · World English Bible
and ye shall keep it until the fourteenth day of the same month; and the whole assembly of the congregation of Israel shall kill it at even.
ASV · American Standard Version

Related passages

From the Treasury of Scripture Knowledge, grouped by the word they explain.

fourteenth
Leviticus 23:5; Numbers 9:3; Numbers 28:16, 18; Deuteronomy 16:1–6; 2 Chronicles 30:15; Ezekiel 45:21
the whole
2 Chronicles 30:15–18; Isaiah 53:6; Matthew 27:20, 25; Mark 15:1, 8, 11, 25, 33, 34; Luke 23:1, 18; Acts 2:23; Acts 3:14; Acts 4:27
in the evening
Heb. between the two evenings. The Jews divided the day into morning and evening: till the sun passed the meridian, all was morning or forenoon; after that, all was evening or afternoon. Their first evening began just after twelve o'clock, and continued till sunset; their second evening began at sunset, and continued till night, i.e., during the whole time of twilight; between twelve o'clock, therefore, and the termination of twilight, the passover was to be offered. See Parallel Passages.
Exodus 16:12; Matthew 27:46–50