Ezekiel 45:18

So says the Lord Jehovah: In the first month, in the first of the month, you shall take a bull without blemish, a son of the herd, and cleanse the sanctuary.

Leviticus 16:16

And he shall atone for the sanctuary, because of the uncleannesses of the sons of Israel, and because of their transgressions in all their sins. And so he shall do for the tabernacle of the congregation which remains with them in the midst of their uncleannesses.

Exodus 12:2

This month shall be to you the beginning of months. It shall be the first month of the year to you.

Leviticus 16:33

And he shall make an atonement for the holy sanctuary, and he shall make an atonement for the tabernacle of the congregation, and for the altar; and he shall make an atonement for the priests and for all the people of the congregation.

Leviticus 22:20

You shall not offer that which has a blemish. For it shall not be acceptable for you.

Ezekiel 43:22

And on the second day you shall offer a kid of the goats without blemish for a sin offering. And they shall cleanse the altar as they cleansed it with the bull.

Hebrews 9:14

how much more shall the blood of Christ (who through the eternal Spirit offered Himself without spot to God) purge your conscience from dead works to serve the living God?

Ezekiel 43:26

Seven days they shall purge the altar and purify it; and they shall consecrate themselves.

Numbers 28:11-15

And in the beginning of your months you shall offer a burnt offering to Jehovah: two young bulls, and one ram, seven lambs of the first year without spot,

Matthew 6:33

But seek first the kingdom of God and His righteousness; and all these things shall be added to you.

Hebrews 7:26

For such a high priest became us, who is holy, harmless, undefiled, separate from sinners and made higher than the heavens,

Hebrews 9:22-25

And almost all things are by the law purged with blood, and without shedding of blood is no remission.

Hebrews 10:3-4

But in those sacrifices there is a remembrance again of sins every year.

Hebrews 10:19-22

Therefore, brothers, having boldness to enter into the Holy of Holies by the blood of Jesus,

1 Peter 1:19

but with the precious blood of Christ, as of a lamb without blemish and without spot;

Treasury of Scripture Knowledge

Summary

Thus saith the Lord GOD; In the first month, in the first day of the month, thou shalt take a young bullock without blemish, and cleanse the sanctuary:

Bible References

In the first month

Exodus 12:2
This month shall be to you the beginning of months. It shall be the first month of the year to you.
Numbers 28:11
And in the beginning of your months you shall offer a burnt offering to Jehovah: two young bulls, and one ram, seven lambs of the first year without spot,
Matthew 6:33
But seek first the kingdom of God and His righteousness; and all these things shall be added to you.

Without blemish

Leviticus 22:20
You shall not offer that which has a blemish. For it shall not be acceptable for you.
Hebrews 7:26
For such a high priest became us, who is holy, harmless, undefiled, separate from sinners and made higher than the heavens,
Hebrews 9:14
how much more shall the blood of Christ (who through the eternal Spirit offered Himself without spot to God) purge your conscience from dead works to serve the living God?
1 Peter 1:19
but with the precious blood of Christ, as of a lamb without blemish and without spot;

And cleanse

Ezekiel 43:22
And on the second day you shall offer a kid of the goats without blemish for a sin offering. And they shall cleanse the altar as they cleansed it with the bull.
Leviticus 16:16
And he shall atone for the sanctuary, because of the uncleannesses of the sons of Israel, and because of their transgressions in all their sins. And so he shall do for the tabernacle of the congregation which remains with them in the midst of their uncleannesses.
Hebrews 9:22
And almost all things are by the law purged with blood, and without shedding of blood is no remission.
Hebrews 10:3
But in those sacrifices there is a remembrance again of sins every year.