Verse 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);

Referenced Verses

• Ps 110:4 : 4 The Lord has made an oath, and will not take it back. You are a priest for ever, after the order of Melchizedek.
• Heb 7:17 : 17 For it has been witnessed of him, You are a priest for ever after the order of Melchizedek.
• 1 Sam 15:29 : 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.
• Heb 6:16-18 : 16 For men at all times make their oaths by what is greater; and any argument is ended by the decision of the oath. 17 So that when it was God's desire to make it specially clear to those who by his word were to have the heritage, that his purpose was fixed, he made it more certain with an oath; 18 So that we, who have gone in flight from danger to the hope which has been put before us, may have a strong comfort in two unchanging things, in which it is not possible for God to be false;