Matthew Poole and continuators on Exodus 23:21

21 Beware of him, and obey his voice, provoke him not: for he will not pardon your transgressions : for my Name is in him .

(i. e.) He will severely punish you for them, by a common Meiosis, as Exod. 20. 7. Understand, if you continue obstinate in your sins.

Heb. Is in his inward parts, i. e. is intimately united to him, according to Ioh. 10. 38. I am in the father and the father in me. It not onely signifies, that he acts in his name, and by his power and authority, which even the Apostles did, and other Ministers of the Gospel do, and therefore it is unreasonable to think no more is ascribed to this Angel, but that his divine nature or essence is in him, whence he is called the Lord our righteousness, Ier. 23. 6. and God who will not give his glory to another, Isa. 42. 8. hath given it to Christ, that all men should honour the son even as they honour the father, Ioh. 5. 23. which never was nor can be said of any Angel without blasphemy. Add to this, that the word name is oft put for the thing or being, whether it be humane or divine, as is manifest from Deut. 28. 58. Psal. 20. 1. and 115. 1. Isa. 30. 27. Act. 1. 15. Revel. 3. 4. and 11. 13. And so it must be here, because this name is not said to be given to him, as it would be, if it were properly taken, but to be in him, or, in his inwards, which agrees well to the Divine nature or essence, but not to the meer name.