Answer: Christ executes the office of a priest, in his once offering himself a sacrifice without spot to God₁, to be a reconciliation for the sins of his people₂; and in making continual intercession for them.₃

1. Hebrews 9:14; Hebrews 9:28
2. Hebrews 2:17
3. Hebrews 7:25

For further study see:

1. WSC Q21: Who is the Redeemer of God’s elect?
2. WSC Q22: How did Christ, being the Son of God, become man?
3. WSC Q23: What offices doth Christ execute as our Redeemer?
4. WSC Q24: How doth Christ execute the office of a prophet?
5. WSC Q25: How doth Christ execute the office of a priest?
6. WSC Q26: How doth Christ execute the office of a king?
7. WSC Q27: Wherein did Christ’s humiliation consist?
8. WSC Q28: Wherein consisteth Christ’s exaltation?