Matthew 6:24

No man can serve two masters: for either he will hate the one and love the other, or he will cleave to the one and neglect the other.

Luke 16:13

No servant can serve two masters: for either he will hate the one, and love the other, or he will cleave to the one, and despise the other. Ye cannot serve God and Mammon.

Luke 16:11

If therefore ye have not been faithful in the unrighteous mammon, who will intrust you with the true riches?

1 Timothy 6:9-10

But they that desire to be rich, fall into temptation, and a snare, and into many foolish and hurtful desires, which plunge men into destruction and perdition.

James 4:4

Ye adulterers and adultresses, know ye not, that the friendship of the world is enmity against God? Whosoever therefore desireth to be a friend of the world, is an enemy of God.

1 John 2:15-16

Love not the world, neither the things that are in the world: if any one love the world, the love of the Father is not in him.

Luke 16:9

And I say to you, Make to yourselves friends of the mammon of unrighteousness, that, when ye fail, they may receive you into everlasting habitations.

Galatians 1:10

For do I now satisfy men, or God? Or do I seek to please men? For if I still pleased men, I should not be the servant of Christ.

Matthew 4:10

Then Jesus saith to him, Get thee hence, Satan; for it is written, Thou shalt worship the Lord thy God, and him only shalt thou serve.

Romans 6:16-22

Know ye not, that to whom ye present yourselves servants to obey, his servants ye are whom ye obey? Whether of sin unto death, or of obedience unto righteousness?

1 Timothy 6:17

Charge the rich in this world not to be high-minded, neither to trust in uncertain riches, but in the living God, who giveth us richly all things to enjoy:

2 Timothy 4:10

For Demas hath forsaken me, loving the present world, and is gone to Thessalonica, Crescens to Galatia, Titus to Dalmatia.

Treasury of Scripture Knowledge

Summary

No man can serve two masters: for either he will hate the one, and love the other; or else he will hold to the one, and despise the other. Ye cannot serve God and mammon.

General references

Bible References

Mammon

Luke 16:9
And I say to you, Make to yourselves friends of the mammon of unrighteousness, that, when ye fail, they may receive you into everlasting habitations.
1 Timothy 6:9
But they that desire to be rich, fall into temptation, and a snare, and into many foolish and hurtful desires, which plunge men into destruction and perdition.

General references

James 1:8
A double-minded man is unstable in all his ways.