Matthew 6:24
No person can serve two masters, for he will either hate the one and love the other, or else he will cling to the one and look down on the other. You cannot serve God and material things [at the same time].
Colossians 3:22
You slaves should obey your earthly masters in everything, [and] do not do it just when they are looking [at you], or to gain their favor, but do it with a sincere heart, out of reverence for the Lord.
1 John 2:15
You should not love the [godless] world, nor the things [i.e., the materialistic values] that are part of this [present] age. If any person loves the world, a [genuine] love for the Father is not in his heart.
2 Peter 2:15-22
They strayed away [from God] by taking the wrong road like Balaam, the son of Bosor did, who loved the reward for doing wrong.