Exodus 27:21

In the Tent of Meeting, outside the veil that is in front of the Testimony, Aaron and his sons are to tend the lamps before the Lord from evening until morning. This is to be a permanent statute for the Israelites for the generations to come.

Note The Testimony refers to the stone tablets in the ark of the covenant inscribed with the Ten Commandments.

BSB · Berean Standard Bible
In the tabernacle of the congregation without the vail, which is before the testimony, Aaron and his sons shall order it from evening to morning before the Lord: it shall be a statute for ever unto their generations on the behalf of the children of Israel.
KJV · King James Version
In the Tent of Meeting, outside the veil which is before the covenant, Aaron and his sons shall keep it in order from evening to morning before the Lord: it shall be a statute forever throughout their generations on the behalf of the children of Israel.
WEB · World English Bible
In the tent of meeting, without the veil which is before the testimony, Aaron and his sons shall keep it in order from evening to morning before Jehovah: it shall be a statute for ever throughout their generations on the behalf of the children of Israel.
ASV · American Standard Version

Related passages

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

the tabernacle of the congregation
Exodus 29:10, 44; Leviticus 3:8; Numbers 8:9
without the vail
Exodus 26:31–33; Exodus 40:3
testimony
Exodus 16:34; Exodus 25:16, 21
Aaron
Exodus 30:8; 1 Samuel 3:3; 2 Chronicles 13:11; Malachi 2:7; Matthew 4:16; Luke 12:35; John 5:35; 2 Corinthians 4:6; 2 Peter 1:19; Revelation 2:1
evening
Genesis 1:5, 8; Leviticus 24:3; Psalm 134:1
a statute for ever
Exodus 28:43; Exodus 29:9, 28; Leviticus 3:17; Leviticus 16:34; Leviticus 24:9; Numbers 18:23; Numbers 19:21; 1 Samuel 30:25