1 Chronicles 28:9

And thou, Solomon my son, know thou the God of thy father, and serve him with a perfect heart and with a willing mind: for the LORD searcheth all hearts, and understandeth all the imaginations of the thoughts: if thou seek him, he will be found of thee; but if thou forsake him, he will cast thee off for ever.

And thou, Solomon my son. The royal speaker now turns to Solomon, and in a most impressive manner presses upon him the importance of sincere and practical piety.

Know thou. He did not mean head knowledge-for Solomon possessed that already-but that experimental acquaintance with God which is only to be obtained by loving and serving Him.