1 Timothy 4:1-6

1 But the Spirit says expressly that in later times some will fall away from the faith, paying attention to seducing spirits and doctrines of demons,  2 through the hypocrisy of men who speak lies, branded in their own conscience as with a hot iron;  3 forbidding marriage and commanding to abstain from foods which God created to be received with thanksgiving by those who believe and know the truth.  4 For every creature of God is good, and nothing is to be rejected, if it is received with thanksgiving.  5 For it is sanctified through the word of God and prayer.  6 If you instruct the brothers of these things, you will be a good servant of Christ Jesus, nourished in the words of the faith, and of the good doctrine which you have followed.