1 Timothy 4:1-5

In the later times people will depart from the faith. They seem to be lead away by deceitful spirits and teachings of demons. Their being led away by them is what can be seen as them devoting themselves to these things. In addition, this devotion is through the insincerity of liars. So they are devoted to deceitful spirits and teachings of demons because of liars who are insincere with them. How could these liars be so insensitive to be insincere and lie, leading others to depart from the faith? Well, apparently their consciences are seared as a hot iron sears. Well, what ends up happening is that these people do things like forbid marriages and require abstinence from foods; Paul teaches the opposite to these things in some of his letters. These things that are forbidden are things created by God, intended to be accepted with thanksgiving. Clearly they are in the wrong because things created by God are good and should not be rejected if accepted with thanksgiving.