Exodus 40:10

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.

Cross-references

Exodus 29:37 adds that after anointing, the altar becomes most holy — the same consecration process described here.

Exodus 27:1 Historical context

In Exodus 27:1, the altar's construction is commanded; here the same altar is anointed and consecrated, fulfilling that instruction.

Leviticus 8:11 records Moses actually anointing the altar with oil — the execution of the command given here.

In 2 Corinthians 5:21, Christ becomes sin for us; the altar of burnt offering, where sacrifices were made, prefigures Christ's atoning sacrifice.

John 17:19 Typology

In John 17:19, Jesus consecrates himself for his disciples; the altar's consecration foreshadows Christ's self-consecration for sanctifying believers.