D.L. Moody emphasizes the urgency of seeking the Lord for salvation, urging listeners to do so with all their hearts while He is near. He highlights that many miss Christ because they are not earnest in their search, contrasting this with the fervor people show for worldly treasures. Moody illustrates that now is the time for salvation, as tomorrow may be too late, and he encourages everyone to call upon Christ without delay. He shares stories of individuals who found Christ when they earnestly sought Him, reinforcing that God is always ready to save those who genuinely seek Him. The preacher calls for a passionate pursuit of God, warning against complacency and the dangers of waiting.