Begin with meditation. Meditate upon eternity. Pray about its realities, seek for grace to be possessed with its tremendous issues; then you will begin to act for eternity.
Take another step. Shut yourself in your room alone, and speak to the Lord about eternity, with the name of one soul—a friend, a neighbor—upon your lips. Let that name and eternity be breathed together before God. Where will that person spend eternity? Think over it, pray over it, weep over it, and, possessed with the reality, you will not be able to avoid speaking to your friend about it.
Visit the sick and dying. Deathbeds are the most powerful sermons the living can hear. Those sweet testimonies to the love of Jesus, those visions of glory, those cheering words of Jesus to His own; ah! what preacher ever told to the heart so well who and what the Saviour is for His people, as the dying whispers of His beloved people?