Sirach 38:9

9 My son, in thy sickness be not negligent: but pray unto the Lord, and he will make thee whole.

Sirach 38:9 In-Context

7 With such doth he heal and taketh away their pains.
8 Of such doth the apothecary make a confection; and of his works there is no end; and from him is peace over all the earth,
9 My son, in thy sickness be not negligent: but pray unto the Lord, and he will make thee whole.
10 Leave off from sin, and order thine hands aright, and cleanse thy heart from all wickedness.
11 Give a sweet savour, and a memorial of fine flour; and make a fat offering, as not being.

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