“Therefore, since we have a great high priest who has passed through the heavens, Jesus, the Son of God, let us hold fast to our confession. For we do not have a high priest who is unable to sympathize with our weaknesses, but one who has similarly been tested in every way, yet without sin. Let us then with confidence draw near to the throne of grace, that we may receive mercy and find grace to help in time of need.”

Hebrews 4:14-16

Although the reign of the exalted Jesus is a theme that is a recurring theme in Hebrews, and Jesus’ throne is mentioned in Heb 1:8, the "throne of grace" (Heb 4:16) refers to the throne of God. The similarity of Heb 4:16 to Heb 10:19–22 indicates that the author is thinking of our confident access to God, made possible by the priestly work of Jesus. The Navarre Bible New Testament Compact Edition

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“God created us without us; but he did not will to save us without us.” To receive his mercy, we must admit our faults. “If we say we have not sinned, we deceive ourselves, and the truth is not in us. If we confess our sins, he is faithful and just, and will forgive our sins and cleanse us from all unrighteousness.”

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Now – this is daunting – this outpouring of mercy cannot penetrate our hearts as long as we have not forgiven those who have trespassed against us. Love, like the Body of Christ, is indivisible; we cannot love the God we cannot see if we do not love the brother or sister we do see. In refusing to forgive our brothers and sisters, our hearts are closed and their hardness makes them impervious to the Father’s merciful love; but in confessing our sins, our hearts are opened to his grace.