1 Chronicles 28:9

Know thou the God of thy father Thou knowest that there is a God, a living and true God, and that the God of thy father is that God: thou knowest not only that he is, but what he is: that he is a Spirit, an infinite and eternal Spirit, self-existent, and therefore independent of, and supreme over, all other beings, who are only the workmanship of his hands. Thou knowest that he is possessed of all possible perfections, of unsearchable wisdom, of almighty power, of unfathomable goodness, of inviolable truth, of impartial justice, of unspeakable mercy and love: that he is thy Creator, Preserver, and Benefactor, to whom thou art indebted for all thy powers and faculties of body and mind; for thy life, and breath, and all things: that he is thy Redeemer and Saviour, thy Governor and Judge. But know him as he makes himself known to his people when he gives them a heart to know him, (Jeremiah 24:7,) and manifests himself to them as he does not to the world. Know him as a sin-pardoning God, merciful to thy unrighteousness, and remembering thy sins and iniquities no more, Jeremiah 31:34. Know him so as to be acquainted, intimately acquainted, and at peace with him, Job 22:21; so as to love and live to him: for God is love, and God is holy, and he that loveth him not, knoweth him not, 1 John 4:7; and, he that saith he knoweth him and loveth him, and keepeth not his commandments, is a liar, and the truth is not in him, 1 John 2:4. And serve him That is, worship and obey him, and endeavour to serve and promote his honour and interest in the world, which is the interest of piety and virtue, of truth and grace. With a perfect heart Not only with a sincere and upright heart, but with an entire and undivided heart, or with thy whole heart, being fervent in his love, and zealous in his service, and therefore with a heart entirely changed and made new, Ezekiel 36:26. And with a willing mind Not with reluctance, as if his service were a bondage and drudgery; but with alacrity, delight, and joy, and from a principle of love to him and his service, knowing by experience that it is perfect freedom. For the Lord searcheth all hearts And as he has made it the indispensable duty of all ranks and conditions of mankind, of kings as well as their subjects, to know, love, and serve him, in sincerity and truth; so he takes notice, and perfectly knows, whether they do so or not; nor can any one impose on him by false pretences. If thou, Solomon my son, only take up a form or profession of religion to please me and others; or if thy obedience to God be insincere, thou mayest indeed deceive man, but thou canst not deceive him, for he searcheth the desires and designs, the counsels and intentions, nay, the thoughts and imaginations, and all the motions of the heart. If thou seek him In the way he hath appointed, by prayer, meditation upon, faith in, and obedience to, his word; if thou seek him sincerely, perseveringly, and with all thy heart; he will be found of thee Will manifest himself to thee by his holy and enlightening Spirit, will make himself known to thee as thy friend, and father, and God in covenant: yea, he that commanded light to shine out of darkness, will shine into thy heart, and give thee the light of the knowledge of his glory; so that, beholding his glory with open face, thou shalt be changed into his image, and shalt resemble the God thou lovest and servest, 2 Corinthians 3:18. But if, after having known, and loved, and begun to serve him aright, thou forsake him Desert his love and service, and turn from following him; he will cast thee off for ever Notwithstanding his promises to me and my seed, and that great honour and favour which he hath showed thee. Reader, observe, this advice and charge, given by David to his son Solomon, is given by the Holy Ghost to thee, and every human creature into whose hands these divine oracles come. O! see that thou attend to it, and make it thy chief care, and the constant business of thy life, to comply with and reduce it to practice.