But now I come to You; and these things I speak in the world so that they may have My joy made full in themselves. I have given them Your word; and the world has hated them, because they are not of the world, even as I am not of the world. I do not ask You to take them out of the world, but to keep them from the evil one. They are not of the world, even as I am not of the world. Sanctify them in the truth; Your word is truth. As You sent Me into the world, I also have sent them into the world. For their sakes I sanctify Myself, that they themselves also may be sanctified in truth.

John 17-13-19 NASB.

Here Jesus is teaching that we are to be in the world but not of it.  The Christian business leader is often faced with a dilemma. How do I be a Christian in the business world Monday through Friday? One of the best sermons I ever heard made a major impact on my life.  The speaker said, “For the believer there is no separation of sacred and secular.  All of life is to be lived as sacred.  We are called to be the same on Monday as we are on Sunday.”