9 “And you, my son Solomon, acknowledge the God of your father, and serve him with wholehearted devotion and with a willing mind, for the LORD searches every heart and understands every desire and every thought. If you seek him, he will be found by you; but if you forsake him, he will reject you forever.

Read 1 Chronicles 28:9 Using Other Translations

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 you, Solomon my son, know the God of your father and serve him with a whole heart and with a willing mind, for the LORD searches all hearts and understands every plan and thought. If you seek him, he will be found by you, but if you forsake him, he will cast you off forever.
“And Solomon, my son, learn to know the God of your ancestors intimately. Worship and serve him with your whole heart and a willing mind. For the LORD sees every heart and knows every plan and thought. If you seek him, you will find him. But if you forsake him, he will reject you forever.