Charles H. Spurgeon on Psalms 119:112

The sinful heart of itself will run any way; upon earthly things, upon evil things, or upon impertinent and unseasonable things; but it will not come to or keep upon that which it should mind; therefore it must be taken as by strong hand, and set upon spiritual things, set on musing and meditation of heavenly things. A carnal heart is like the loadstone, it cleaves to nothing but steel or iron, and both of them easily unite: but the heart must be of another property, and act in a higher way. And a good heart, though it thinks too much earthward, and runs often wrong, yet it will set itself in its thinking on right objects, and make itself and them to meet and unite. David tells us how he did; he inclined his heart to God's commandments, both to keep them and to meditate on them. He took and bent his heart, as a thing bending too much to other things; set his mind on musing on it. He found his heart and the law of God too far asunder, and so would continue, unless he brought them together and made them one. If he had not brought his heart to the word, he had never meditated: the object cannot apply itself to the mind, but the mind must bring itself to the object. No holy duties will come to us, we must come to them. Nathanael Ranew, in "Solitude Improved by Divine Meditation, " 1670.