"All my fountains are in you," said David. If you have all your fountains in God, your heart will be completely full. If you went to the foot of Calvary, there your heart will be bathed in love and gratitude. If you go often to your place of seclusion, and there talk with your God, it is there that your heart will be filled with calm determination. If you go out with the Master to the Mount of Olives, and looked down with Him on a wicked Jerusalem, and weep over it with Him, then your heart will be full of love for eternal souls. If you continually draw your stimulus, your life, your entire being from the Holy Spirit, without whom you can do nothing, and if you live in close communion with Christ, then there will be no fear of you having a cold heart.
One who lives without prayer—one who lives with little prayer—one who seldom reads the Word—one who seldom looks up to heaven for a fresh influence from on high—will be the person whose heart will become cold and barren; but the person who calls in secret to their God—who spends much time in holy seclusion—who delights to meditate on the words of the Most High—whose soul is given up to Christ—who delights in his fullness, rejoices in his complete sufficiency, prays for his second coming, and delights in the thought of his glorious return—such a person, I say, must have an overflowing heart; and as their heart is, so will be their life. It will be a full life; it will be a life that will speak from the grave, and reverberate into the future. "Above all else, guard your heart, for it is the wellspring of life," and plead with the Holy Spirit to keep it full; otherwise, the outcome of your life will be feeble, shallow, and superficial; and you might as well not have lived at all.