Simplify the following text for a Grade 8 native English-speaking person.
Original: Samael is also sometimes identified as being the angelic antagonist who wrestled with Jacob , and also the angel who held back the arm of Abraham as he was about to sacrifice his son .
Simplified: Samael is also sometimes said to be the angel who wrestled with Jacob , and also the angel who held back the arm of Abraham as he was about to sacrifice his son .