Romans 6:15-23

What then? Shall we sin because we are not under law, but under grace? Certainly not! Do you not know that when you offer yourselves as obedient slaves, you are slaves to the one you obey, whether you are slaves to sin leading to death, or to obedience leading to righteousness? But thanks be to God that, though you once were slaves to sin, you wholeheartedly obeyed the form of teaching to which you were committed. You have been set free from sin and have become slaves to righteousness. I am speaking in human terms because of the weakness of your flesh. Just as you used to offer the parts of your body in slavery to impurity and to escalating wickedness, so now offer them in slavery to righteousness leading to holiness. For when you were slaves to sin, you were free of obligation to righteousness. What fruit did you reap at that time from the things of which you are now ashamed? The outcome of those things is death. But now that you have been set free from sin and have become slaves to God, the fruit you reap leads to holiness, and the outcome is eternal life. For the wages of sin is death, but the gift of God is eternal life in Christ Jesus our Lord.

Matthew 6:24

No one can serve two masters: Either he will hate the one and love the other, or he will be devoted to the one and despise the other. You cannot serve both God and money.