30Being therefore a prophet, and knowing that God had sworn with an oath to him that he would set one of his descendants on his throne,
Though David was a king, he is called a prophet on account of the fact that he composed many of the psalms and the Holy Spirit spoke through him (Acts 1:16).
30 Being therefore a prophet, and knowing that God had sworn with an oath to him that he would set one of his descendants on his throne,