To sit at the "right hand of God" is a symbolic action of receiving great honor and authority from God. Alternate translation: "Sit in the place of honor beside me" (See: [[rc://en/ta/man/translate/translate-symaction]])
This is an idiom. Alternate translation: "until I conquer your enemies" or "until I make your enemies bow down before you" (See: [[rc://en/ta/man/translate/figs-idiom]])