Hebrews 7:17

For the testimony is, Thou art a priest for ever after the order of Melchisedec.

Hebrews 5:6

As he saith also in another passage, "Thou art priest forever after the order of Melchisedec;"

Hebrews 7:21

(for they indeed were made priests without an oath; but he with an oath, by him who said unto him, "The Lord hath sworn, and will not repent, Thou art a priest for ever after the order of Melchisedec:")

Hebrews 6:20

into which the forerunner for us is entered, even Jesus, made after the order of Melchisedec an high-priest for ever.

Hebrews 5:10

publicly proclaimed of God high-priest after the order of Melchisedec.

Hebrews 7:15

and it is yet more abundantly evident, that there should arise another priest after the likeness of Melchisedec,

Treasury of Scripture Knowledge

Summary

For he testifieth, Thou art a priest for ever after the order of Melchisedec.

Bible References

General references

Hebrews 7:15
and it is yet more abundantly evident, that there should arise another priest after the likeness of Melchisedec,
Hebrews 5:6
As he saith also in another passage, "Thou art priest forever after the order of Melchisedec;"
Hebrews 6:20
into which the forerunner for us is entered, even Jesus, made after the order of Melchisedec an high-priest for ever.