Wisdom 16:26

26 That thy children, O Lord, whom thou lovest, might know, that it is not the growing of fruits that nourisheth man: but that it is thy word, which preserveth them that put their trust in thee.

Wisdom 16:26 In-Context

24 For the creature that serveth thee, who art the Maker increaseth his strength against the unrighteous for their punishment, and abateth his strength for the benefit of such as put their trust in thee.
25 Therefore even then was it altered into all fashions, and was obedient to thy grace, that nourisheth all things, according to the desire of them that had need:
26 That thy children, O Lord, whom thou lovest, might know, that it is not the growing of fruits that nourisheth man: but that it is thy word, which preserveth them that put their trust in thee.
27 For that which was not destroyed of the fire, being warmed with a little sunbeam, soon melted away:
28 That it might be known, that we must prevent the sun to give thee thanks, and at the dayspring pray unto thee.

The Brenton translation of the Septuagint is in the public domain.