Proverbs 13.4 - The soul of the sluggard desireth and hath nothing: but the soul of the diligent shall be made fat.
Charles Bridges (An Exposition of the Book of Proverbs, pp. 134-135):
Oh! be industrious—if anywhere—in religion. Eternity is at stake. Hours—days are lost. Soon they come to years—and for want of energy all is lost. Heartless wishes will not give life.—The halting step will not bring us to God. A few minutes’ cold prayer will not seize the prize. To expect the blessing without diligence is delusion.
Diligence brings its own reward in the world—much more in religion. It will not be content with desiring, but possessing. Here is reality—rich privilege—The “exercise of godliness” tends to health and profit. Useful habits are formed—dormant energy is excited. The conflict of faith, the violence of prayer, become sources of enjoyment. God honors the trading of talents, where he has the full revenue of his gifts.
Shake off, then, the dust of sloth—child of God! Take care that the bed of ease doth not pall thine appetite, and hinder thee from seeking food for thy soul. Let thy graces be vigorous and radiant. Let thy profession be always progressing—deepening—expanding. If thou be in Christ, seek to be “rooted and grounded in him.” Let there be “life more abundantly.” “Be strong in the grace that is in Christ Jesus.” Let “the joy of the Lord be thy strength.” Then thy soul shall be made fat—healthful—vigorous—in all fruit and grace.