Matthew 6:24
No one can serve two masters; for 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 God and mammon.
Colossians 3:22
Slaves, in everything obey those who are your masters according to the flesh, not with eye-service, as men-pleasers, but in sincerity of heart, fearing the Lord.
1 John 2:15
Do not love the world or the things in the world. If anyone loves the world, the love of the Father is not in him.
2 Peter 2:15-22
Forsaking the right way, they have gone astray, having followed the way of Balaam, the son of Beor, who loved the wages of unrighteousness;