Matthew 6:24

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

Revelation 3:15-16

I know thy works, that thou art neither cold nor hot:

Treasury of Scripture Knowledge

Summary

So these nations feared the LORD, and served their graven images, both their children, and their children's children: as did their fathers, so do they unto this day.

General references

Bible References

These nations

Matthew 6:24
No man can serve two masters: for he will either hate the one, and love the other; or he will adhere to the one, and disregard the other. Ye cannot serve God and mammon.
Revelation 3:15
I know thy works, that thou art neither cold nor hot:

General references

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