Hebrews 7:21

but he with an oath, because of him who says to him, The Lord swore and will not change his mind, Thou are a priest into the age according to the order of Melchizedek.

Psalm 110:4

LORD has sworn, and will not repent. Thou are a priest forever after the order of Melchizedek.

Hebrews 7:17

For he testifies, Thou are a priest into the age according to the order of Melchizedek.

1 Samuel 15:29

And also the Strength of Israel will not lie nor repent, for he is not a man that he should repent.

Hebrews 6:16-18

For men certainly swear by the greater, and of every dispute with them the oath is final for confirmation.

Treasury of Scripture Knowledge

Summary

(For those priests were made without an oath; but this with an oath by him that said unto him, The Lord sware and will not repent, Thou art a priest for ever after the order of Melchisedec:)

Sware

General references

Bible References

The lord

Hebrews 7:17
For he testifies, Thou are a priest into the age according to the order of Melchizedek.
Psalm 110:4
LORD has sworn, and will not repent. Thou are a priest forever after the order of Melchizedek.

Sware

Hebrews 6:16
For men certainly swear by the greater, and of every dispute with them the oath is final for confirmation.

General references

Hebrews 7:17
For he testifies, Thou are a priest into the age according to the order of Melchizedek.