Don’t just become a strict vegetarian but also become a devotee of the Lord

In the Bhagavad-gita (9.26) the Lord directly states that He accepts vegetarian food from the hands of a pure devotee. Therefore a human being should not only become a strict vegetarian but should also become a devotee of the Lord, offer the Lord all his food and then partake of such prasadam, or the mercy of God. Only those who act in this way can properly discharge the duties of human life. Those who do not offer their food to the Lord eat nothing but sin and subject themselves to various types of distress, which are the results of sin (Bg. 3.13).

– Srila Prabhupada, Sri Isopanishad Mantra 1