I Timothy 4

But the Holy Spirit distinctly and expressly declares that in latter times some will turn away from the faith, giving attention to deluding and seducing spirits and doctrines that demons teach.
Through the hypocrisy and pretentions of liars whose consciences are seared,
Who forbid people to marry and teach them to abstain from certain kinds of foods which God created to be received with thanksgiving by those who believe and have an increasingly clear knowledge of the truth.
For everything God has created is good, and nothing is to be thrown away or refused if it is received with thanksgiving.
For it is hallowed and consecrated by the Word of God and by prayer.
If you lay all these instructions before the brethren, you will be a worthy steward and a good minister of Christ Jesus, ever nourishing your own self on the truths of the faith and of the good Christian instruction which you have closely followed.
But refuse and avoid irreverent legends and silly myths, and express your disapproval of them. Train yourself toward godliness, keeping yourself spiritually fit.
For physical training is of some value, but godliness is useful and of value in everything and in everyway, for it holds promise for the present life and also for the life which is to come.
This saying is reliable and worthy of complete acceptance by everybody.
With a view to this we toil and strive, yes and suffer reproach, because we have fixed our hope on the living God, Who is the Savior of all men, expecially of those who believe.
Continue to command these things and to teach them.
Let no one despise you or think less of you beccause of your youth, but be an example for the believers in speech, in conduct, in love, in faith, and in purity.
Devote yourself to public and private reading, to exhortaion and to teaching and instilling doctrine.
Do not neglect the gift which is in you, that special inward endowment which was directly imparted to you by the Holy Spirit by prophetic utterance when the elders laid their hands upon you at your ordination.
Practice and cultivate and meditate upon these duties; throw yourself wholly into them as your ministry, so that your progress may be evident to everybody.
Look well to yourself to your own personality and to your teaching; persevere in these things hold to them, for by doing so you will save both yourself and those who hear you.

(I Timothy 4, The Amplified Bible)