“Behold, I am going to send an angel before you to guard you along the way and to bring you into the place which I have prepared. Be on your guard before him and obey his voice; do not be rebellious toward him, for he will not pardon your transgression, since My name is in him.” Exodus 23:21
Some Trinitarians have alleged that Exodus 23:21 proves that God sent a pre-incarnate Son as “an angel” to the Israelites because only God can pardon transgressions. However, the Hebrew Scriptures prove that God has angelic priests that minister in heaven on a much more transcendent level than any human priest who ever served on earth. The Old Testament Tabernacle and Temple was a copy of the original tabernacle and altar in heaven. For Hebrews 8:5 states: “They serve at a sanctuary that is a copy and shadow of what is in heaven (NIV).”
Revelation 11:19, “And the temple of God was opened in heaven, and there was seen in his temple the ark of his testament.”
Revelation 15:5, “After this I looked and in heaven the temple, that is the Tabernacle of the Testimony was opened.”
Isaiah 6:6, “Then one of the seraphim flew to me with a live coal in his hand, which he had taken with tongs from the ALTAR. With it he touched my mouth and said, See, this has touched your lips; YOUR GUILT IS TAKEN AWAY AND YOUR SIN IS ATONED FOR.”
The scriptures prove that the earthly sanctuary was made as “a copy and shadow of what is in heaven (Hebrews 8:5)”. Thus it is an undeniable fact that the angelic being who served in some sort of priestly manner at an ALTAR IN HEAVEN in Isaiah 6:6 had authority from God to “atone for sin” and “take guilt away”. Therefore it is logical to believe that the angel in Exodus 23:21 could also “pardon sin” without being a second God Person of an alleged Trinity..