“And inasmuch as not without an oath he was made priest: (For those priests were made without an oath; but this with an oath by him that said unto him, The Lord swore and will not repent, Thou art a priest for ever after the order of Melchisedec).”
(Hebrews 7:20-21)
The writer of Hebrews notes that Christ’s priesthood, established by God’s irrevocable oath, is infinitely superior to that of the Levitical order. Unlike the Old Testament priests, commissioned without divine swearing, Christ’s priesthood is sealed with the solemn declaration of Psalm 110:4, “The Lord hath sworn, and will not repent, Thou art a priest for ever after the order of Melchisedec.” John Calvin notes, “The oath of God invests Christ’s priesthood with eternal certainty, distinguishing it as the unchangeable foundation of our salvation.” This divine oath reveals two truths: the absolute certainty of God’s promise and the unparalleled dignity of Christ’s role as Mediator, making His priesthood eternal and unassailable.
Christ’s priesthood embodies God’s perfect justice, infinite mercy, and unsearchable wisdom. As High Priest, He mediates a better covenant, one that secures eternal redemption through His singular, all-sufficient sacrifice (Heb. 9:12). The Levitical priests offered repeated sacrifices, unable to remove sin permanently. But Christ’s one offering on the cross satisfied God’s justice forever, reconciling sinners to God (Heb. 10:14). His priesthood is therefore everlasting, rooted in the divine oath that ensures its permanence. Numbers 23:19 affirms, “God is not a man, that he should lie; neither the son of man, that he should repent,” guaranteeing the unchangeable nature of Christ’s office.
This superior priesthood is the bedrock of my salvation. Christ, as the eternal Priest after the order of Melchizedek, stands as my Mediator, interceding with both divine authority and human sympathy. His sacrifice, validated by God’s oath, removes my sin and grants me bold access to the throne of grace (Heb. 4:16). Unlike the Levitical priests, bound by mortality and imperfection, Christ’s divine-human nature equips Him to mediate perfectly, fulfilling God’s law and extending His mercy. His priesthood assures me that my redemption is forever sealed by the unchangeable will of God.
The oath also indicates the solemnity of Christ’s role as a divine commitment, as 1 Samuel 15:29 declares, “The Strength of Israel will not lie nor repent.” This certainty gives me confidence to approach God through Christ, knowing His mediation never fails. His priesthood is the living reality of God’s covenant, ensuring that my salvation rests not on my works but on His finished work. Thus, my faith is anchored in this High Priest who offered Himself, once for all, securing my place before God forever.[1]
Contemplations:
- The unchanging promise. Hebrews 7:20-21 assures me that Christ’s priesthood, sealed by God’s oath, is eternal. Lord, help me rest in the certainty of Christ’s eternal priesthood which allows me to approach Your throne with confidence.
- The solemnity of divine oath. God’s oath reveals the gravity of Christ’s role, a commitment that cannot be broken. But do I truly grasp the weight of this truth? I must honor the solemnity of His priesthood, worshiping the God who seals His promises with divine certainty.
- The superiority of Christ’s priesthood. Christ’s priesthood surpasses the Levitical order, because it was perfected by His finished work. I must cling to His perfect sacrifice, trusting His completed atonement to make me acceptable before God.
- The eternal Mediator. Christ’s eternal priesthood comforts me in my frailty. He intercedes forever, securing my salvation. This allows me to come to Him with every need, resting in His unchanging mediation.
Prayer (Adoration):
O Lord, You are the God of eternal truth, whose oath establishes Your Son as our High Priest forever. I worship You for the glory of Christ’s priesthood, sealed by Your unchangeable will, as Hebrews 7:20-21 declares. You are the fountain of justice and mercy who ordains a Mediator that reconciles sinners to Your holiness. I adore You for the splendor of Your plan, revealed in Christ, the Priest after the order of Melchizedek.
Your Son, Jesus Christ, is the eternal Mediator, whose perfect sacrifice secures my redemption. I praise You for His divine-human nature, uniting Your justice with Your compassion. His priesthood, established by Your oath, is my assurance, my hope, my access to Your throne. I marvel at Your faithfulness, for You do not repent of Your promise, as Numbers 23:19 affirms, ensuring Christ’s intercession never fails.
I worship You for the beauty of His sacrifice, offered once for all, removing my sin and granting me eternal life. Your love shines in His priesthood, which upholds me in my weakness and presents me blameless before You. And I adore You for the certainty of Your covenant, sealed in Christ’s blood, binding me to Your grace forever.
You are the God who delights in redemption, whose wisdom and power are displayed in Your Son’s priestly work. I bow before You, exalting Your name for the assurance of His eternal priesthood, through which I am Yours.
In Jesus’ name I pray, Amen.
Further Scripture References for Hebrews 7:20-21:
Ps. 110:4, Heb. 5:6, Num. 23:19, 1 Sam. 15:29.
[1] William Gouge, A Learned and Very Useful Commentary on the Whole Epistle to the Hebrews (London: A.M., T.W. and S.G. for Joshua Kirton, 1655), 191.
