Ben Sira 43:7

7 From the moon is the sign of the festival day, a light that decreaseth in her perfection.

Ben Sira 43:7 In-Context

5 Great is the Lord that made him, and at his words he hath hastened his course.

6 And the moon in all in her season, is for a declaration of times and a sign of the world.

7 From the moon is the sign of the festival day, a light that decreaseth in her perfection.

8 The month is called after her name, increasing wonderfully in her perfection

9 Being an instrument of the armies on high, shining gloriously in the Armament of heaven.