en_tn_condensed/heb/02/10.md

bring many sons to glory

"save many believers". The gift of glory is spoken of, as if it were a place to which people could be brought.

the founder of their salvation

"the one who makes their salvation possible" or "the one who leads people to salvation"

complete

Becoming mature and completely trained is spoken of as if a person were made complete, perhaps complete in all his body parts.