Matthew 6:24
"No man can be the bondservant of two masters; for either he will dislike one and like the other, or he will attach himself to one and think slightingly of the other. You cannot be the bondservants both of God and of gold.
Colossians 3:22
Slaves, be obedient in everything to your earthly masters; not in acts of eye service, as aiming only to please men, but with simplicity of purpose, because you fear the Lord.
1 John 2:15
Do not love the world, nor the things in the world. If any one loves the world, there is no love in his heart for the Father.
2 Peter 2:15-22
Forsaking the straight road, they have gone astray, having eagerly followed in the steps of Balaam, the son of Beor, who was bent on securing the wages of unrighteousness.