Hi Robert,
Hello Richard. An angel forgives sins in Zechariah 3:4.
I don't know Hebrew, so maybe you will correct me, but let's look at the first four verses:
1Then he showed me Joshua the high priest standing before the angel of the LORD, and Satan standing at his right hand to accuse him.
2The LORD said to Satan, "The LORD rebuke you, Satan! Indeed, the LORD who has chosen Jerusalem rebuke you! Is this not a brand plucked from the fire?"
3Now Joshua was clothed with filthy garments and standing before the angel.
4He spoke and said to those who were standing before him, saying, "Remove the filthy garments from him " Again he said to him, "See, I have taken your iniquity away from you and will (I)clothe you with festal robes."
The LORD in verse 2 calls the high priest "a brand plucked from the fire". I think that the angel is restating the LORD's statement. A brand plucked from the fire is a forgiven brand.
I hope that your studies are going well.
Richard