Sirach 35:9

9 In all thy gifts shew a cheerful countenance, and dedicate thy tithes with gladness.

Sirach 35:9 In-Context

7 The sacrifice of a just man is acceptable. and the memorial thereof shall never be forgotten.
8 Give the Lord his honour with a good eye, and diminish not the firstfruits of thine hands.
9 In all thy gifts shew a cheerful countenance, and dedicate thy tithes with gladness.
10 Give unto the most High according as he hath enriched thee; and as thou hast gotten, give with a cheerful eye.
11 For the Lord recompenseth, and will give thee seven times as much.

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