The king is speaking about himself in the third person. This can be stated in first person. Alternate translation: "me, his anointed one ... answer me ... rescue me" (See: [[rc://en/ta/man/translate/figs-123person]])
God's right hand represents his power. Alternate translation: "with his great strength he will rescue him" (See: [[rc://en/ta/man/translate/figs-metonymy]])