GOD'S WORD® Translation
David was a prophet and knew that God had promised with an oath that he would place one of David's descendants on his throne.

American Standard Version
Being therefore a prophet, and knowing that God had sworn with an oath to him, that of the fruit of his loins he would set one upon his throne;

Berean Study Bible
But he was a prophet and knew that God had promised him on oath that He would place one of his descendants on his throne.

Douay-Rheims Bible
Whereas therefore he was a prophet, and knew that God hath sworn to him with an oath, that of the fruit of his loins one should sit upon his throne.

English Revised Version
Being therefore a prophet, and knowing that God had sworn with an oath to him, that of the fruit of his loins he would set one upon his throne;

King James Bible
Therefore being a prophet, and knowing that God had sworn with an oath to him, that of the fruit of his loins, according to the flesh, he would raise up Christ to sit on his throne;

World English Bible
Therefore, being a prophet, and knowing that God had sworn with an oath to him that of the fruit of his body, according to the flesh, he would raise up the Christ to sit on his throne,

Young's Literal Translation
a prophet, therefore, being, and knowing that with an oath God did swear to him, out of the fruit of his loins, according to the flesh, to raise up the Christ, to sit upon his throne,

Acts 2:30 Additional Translations ...