Quoting Isaiah, 1 Peter 2:24 says, "By His ___ you are healed."

Answer: Stripes

He Himself bore our sins in His body on the tree, so that we might die to sin; "By His stripes you are healed."

“He Himself bore our sins in His body on the tree, so that we might die to sin and live to righteousness. “By His stripes you are healed.””— 1 Peter 2:24 (BSB)