Hebrews 13:9

9 with teachings manifold and strange be not carried about, for [it is] good that by grace the heart be confirmed, not with meats, in which they who were occupied were not profited;

Hebrews 13:9 In-Context

7 Be mindful of those leading you, who did speak to you the word of God, whose faith -- considering the issue of the behaviour -- be imitating,
8 Jesus Christ yesterday and to-day the same, and to the ages;
9 with teachings manifold and strange be not carried about, for [it is] good that by grace the heart be confirmed, not with meats, in which they who were occupied were not profited;
10 we have an altar, of which to eat they have no authority who the tabernacle are serving,
11 for of those beasts whose blood is brought for sin into the holy places through the chief priest -- of these the bodies are burned without the camp.
Young's Literal Translation is in the public domain.