Exodus 40:10

Anoint the altar of burnt offering and all its utensils; consecrate the altar, and it shall be most holy.
BSB · Berean Standard Bible
And thou shalt anoint the altar of the burnt offering, and all his vessels, and sanctify the altar: and it shall be an altar most holy.

Note most holy: Heb. holiness of holinesses

KJV · King James Version
You shall anoint the altar of burnt offering, with all its vessels, and sanctify the altar, and the altar will be most holy.
WEB · World English Bible
And thou shalt anoint the altar of burnt-offering, and all its vessels, and sanctify the altar: and the altar shall be most holy.
ASV · American Standard Version

Related passages

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

sanctify
Exodus 29:36, 37; Leviticus 8:11; Isaiah 11:2; Isaiah 61:1; John 3:34; John 17:19
most holy
Heb. holiness of holiness.
Luke 1:35; 1 Corinthians 1:30; 2 Corinthians 5:21; Hebrews 7:26