Nathan Blyth preached a most touching and effective sermon from the words, “Behold, I stand at the door and knock!” “You see,” he said, “that the Lord is outside the sinner’s heart! He dwells in the bosom of the Father, and is His glory and delight. He dwells in the angels, and fills them with His glory! He dwells in the happy saints in heaven, and their bliss is complete. He dwells in the heart of every Christian believer here, and they are happy in His love. Everybody is happy who has Jesus in his heart. He doesn’t dwell in the hearts of devils, and their misery is complete. Sinner! He does not dwell in your heart, and you are ripening for the same ruin. You are hastening to that dark place where the doors can never be opened inward to admit Him, or outward to release you from the terrors of the second death. “But, my dear friends, though Christ is outside, He dearly wants to come in. And what for, think you? Because He loves you! His love for you brought Him from heaven to earth, led Him to Calvary, and brings Him to your heart’s door, where He stands to-night! He wants to come in! He knows how bad and sad, how poor and helpless you are, and so He ‘knocks’ and says, ‘Let Me in! Thy soul is perishing; I can save it! Thy enemies are legion; I can conquer them! Thy needs are great; I can supply them! Thy sorrows are many; I can lift them! Thy tears fall fast; I can dry them! Thy sins are red like crimson; I can make thee white as snow! Poor, lost, helpless, dying sinner, I can save thee! I am thy Friend. I love thee! I died for thee! Now I plead with thee. Sinner, poor sinner, let Me in!’