The Second Adam: Choosing vs. Refurbishment vs. De Novo

Where is the plural ever used of human beings in the OT (or ANE)? I still favor Heiser’s read, but you’re not the only one to differ with him. With Deut 32:8, however, the LXX uses angeloi. And why would MT change it to “sons of Israel”? And what of silmilar language in Deut 4:19?