Hebrews 10:38 (KJV)
Now the just shall live by faith: but if any man draw back, my soul shall have no pleasure in him.
Denying Jesus even in the face of death was something that the apostles and early Christians would not do because they understood the meaning of faith. As Jews, the apostles understood that faith in Jesus meant faithfulness to him no matter what. Faith was not a once and for all thing, it was an enduring reality that controlled every area of their lives.
In the Hebrew language, the word translated to mean faith can also be translated to mean faithfulness. In that language, faithfulness and faith is the same word. This has a lot to say about the nature of the Christian faith.
When Apostle Paul talks about justification by faith, we must realize that there is always an undertone of faithfulness because as a Jew, Paul could not understand how one would have faith and not be loyal, obedient and faithful to the one he has faith in.
Anyone who truly has faith in God will be faithful to God. He will have no other gods beside Him. He will obey Him and ever seek to more perfectly walk in His will.
When people try to divorce faith in God from commitment and faithfulness to God, they are not talking about the faith of our Lord Jesus Christ, they are talking about another kind of faith, and that faith cannot save anyone.
Go into today remembering that faith in the Lord will make you faithful to Him and not ashamed of Him in this crooked world.