No man can serve two masters: for either he will hate the one, and love the other; or he will hold to the one, and despise the other. Ye cannot serve God and mammon. Matthew 6:24
Christ does not say that man will not or shall not serve two masters, but that he cannot. The interests of God and the interests of mammon have no union or sympathy. Just where the conscience of the Christian warns him to forbear, to deny himself, to stop, just there the worldling steps over the line, to indulge his selfish propensities. On one side of the line is the self-denying follower of Christ; on the other side is the self-indulgent world lover, pandering to fashion, engaging in frivolity, and pampering himself in forbidden pleasure. On that side of the line the Christian cannot go.
No one can occupy a neutral position; there is no middle class, who neither love God nor serve the enemy of righteousness. Christ is to live in His human agents and work through their faculties and act through their capabilities. Their will must be submitted to His will; they must act with His Spirit. Then it is no more they that live, but Christ that lives in them. He who does not give himself wholly to God is under the control of another power, listening to another voice, whose suggestions are of an entirely different character. (Thoughts from the Mount of Blessing, 93, 94)
Reflection: How often we want to be Christians but still live like the world. This is impossible. We even have pastors today telling us it's okay to sin. We must not be fooled by anyone who says we can do anything as long as we love Jesus. It's either all or nothing. Let's give all of ourselves today to the Author and Finisher of our Faith--Jesus Christ.