all these were sons of Heman the king's seer in the words of God, to exalt his power; and God had given to Heman fourteen sons and three daughters.

all these are sons of Heman, seer of the king in the things of God, to lift up a horn; and God giveth to Heman fourteen sons and three daughters.

All these were sons of Heman, the king's seer in the words of God. And to make great his power God gave Heman fourteen sons and three daughters.

all these were the sons of Heman the king's seer in the things pertaining to God, to lift up the horn. And God gave to Heman fourteen sons and three daughters.

To lift up the horn - Some take this literally, and consider that Heman and his sons played on the born in the musical services; but there is no other evidence that the horn was so employed. Perhaps the most probable explanation is that it has been transferred from the next clause, where (as here) it followed the word "God," with the sense that "God, to exalt Heman's horn (or, increase his dignity), gave him fourteen sons and three daughters."

To lift up the horn - "The horn of prophecy," says Jarchi; "to sound with the trumpet in the words of prophecy before the Lord." - T.
Three daughters - These also were employed among the singers.

All these were the sons of Heman, the king's seer,.... The prophet of the king, as the Targum, who was frequently with him, assisting him
in the words of God: in divine things:
to lift up the horn; to blow with the hornpipe or trumpet, and to magnify and set forth the greatness of the kingdom of Israel, and especially of the King Messiah, the horn of salvation, that would be raised up in the house of David:
and God gave to Heman fourteen sons; whose names are before mentioned:
and three daughters; of whom we have no more account, only may observe, that both are the gifts of God, and an heritage from him, Psalm 127:3.

Heman the king's seer--The title of "seer" or "prophet of David" is also given to Gad (1-Chronicles 21:9), and to Jeduthun (2-Chronicles 29:14-15), in the words (Margin, "matters") of God.
to lift up the horn--that is, to blow loudly in the worship of God; or perhaps it means nothing more than that he presided over the wind instruments, as Jeduthun over the harp. Heman had been appointed at first to serve at Gibeon (1-Chronicles 16:41). But his destination seems to have been changed at a subsequent period.
God gave to Heman fourteen sons and three daughters--The daughters are mentioned, solely because from their musical taste and talents they formed part of the choir (Psalm 68:25).

The king's seer - He is called the king's seer, either because the king took special delight in him; or because he frequently attended the king in his palace, executing his sacred office there, while the rest were employed in the tabernacle. In the words - To sing Divine songs as were inspired by God to the prophets or holy men of God. The horn - To praise God with the sound of a trumpet or some other musical instrument made of horn, which being a martial kind of music, might be most grateful to David's martial spirit: tho' he was also skilled in other instruments of music which he used in the house of God.