NET

21 but Jesus did so with a sworn affirmation by the one who said to him, “The Lord has sworn and will not change his mind, ‘You are a priest forever’”—

Darby

21 (for they are become priests without the swearing of an oath, but he with the swearing of an oath, by him^D9057 who said, as to him, The Lord has sworn, and will not repent [of it], *Thou* [art] priest for ever [according to the order of Melchisedec];)

Darby Bible Notes

him - Or 'to him.' .

KJV

21 (For those priests were made without an oath^K7184; 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:)

KJV Bible Notes

without an oath: Or, without swearing of an oath.

Strong's

21 (For^G1063 those priests^G2409 were^{G3303 G1526} made^G1096 without^G5565 an oath^G3728; but^G1161 this with^G3326 an oath^G3728 by^G1223 him that said^G3004 unto^G4314 him^G846, The Lord^G2962 sware^G3660 and^G2532 will^G3338 not^G3756 repent^G3338, Thou^G4771 art a priest^G2409 for^G1519 ever^G165 after^G2596 the order^G5010 of Melchisedec^G3198:)