We must be holy, because this is the only sound evidence that we have a saving faith in Christ. "Faith, if it hath not works, is dead, being alone." "As the body without the spirit is dead, so faith without works is dead also" (James 2:17,26).
We must be holy, because this is the only proof that we love the Lord Jesus Christ in sincerity. What can be more plain than our Lord's own words? "If ye love Me, keep my commandments." "He that hath my commandments, and keepeth them, he it is that loveth Me." (John 14:15,21).
We must be holy, because this is the only sound evidence that we are God's children. "As many as are led by the Spirit of God, they are the sons of God." "Whosoever doeth not righteousness is not of God" (Rom. 8:14; I John 3:10).
Lastly, we must be holy, because without holiness on earth we should never be prepared and meet for heaven. It is written of the heavenly glory, "There shall in no wise enter into it anything that defileth, neither whatsoever worketh abomination, or maketh a lie" (Rev. 21:27). St. Paul says expressly, "Without holiness no man shall see the Lord" (Heb. 12:14).
Ah, reader, the last text I have just quoted is very solemn. It ought to make you think. It was written by the hand of inspired man: it is not my private fancy. Its words are the words of the Bible: not of my own invention. God has said it, and God will stand to it: "Without holiness no man shall see the Lord."
What tremendous words these are! What thoughts come across my mind as I write them down! I look at the world, and see the greater part of it lying in wickedness; I look at professing Christians, and see the vast majority having nothing of Christianity but the name; I turn to the Bible, and I hear the Spirit saying,
"Without holiness no man shall see the Lord."