Hebrews 7:21

(For those were made priests without an oath, but this one was made a priest with an oath by him who says of him, The Lord gave his oath, which he will not take back, that you are a priest for ever);

Hebrews 7:17

For it has been witnessed of him, You are a priest for ever after the order of Melchizedek.

1 Samuel 15:29

And further, the Glory of Israel will not say what is false, and his purpose may not be changed: for he is not a man, whose purpose may be changed.

Hebrews 6:16-18

For men at all times make their oaths by what is greater; and any argument is ended by the decision of the oath.

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:)

The lord

Sware

General references

Bible References

The lord

Hebrews 7:17
For it has been witnessed of him, You are a priest for ever after the order of Melchizedek.

Sware

Hebrews 6:16
For men at all times make their oaths by what is greater; and any argument is ended by the decision of the oath.

General references

Hebrews 7:17
For it has been witnessed of him, You are a priest for ever after the order of Melchizedek.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain