Sirach 3:22

22 But what is commanded thee, think thereupon with reverence, for it is not needful for thee to see with thine eyes the things that are in secret.

Sirach 3:22 In-Context

20 For the power of the Lord is great, and he is honoured of the lowly.
21 Seek not out things that are too hard for thee, neither search the things that are above thy strength.
22 But what is commanded thee, think thereupon with reverence, for it is not needful for thee to see with thine eyes the things that are in secret.
23 Be not curious in unnecessary matters: for more things are shewed unto thee than men understand.
24 For many are deceived by their own vain opinion; and an evil suspicion hath overthrown their judgment.

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