Sirach 43:5-7

Revised Standard Version Catholic Edition

⁵ Great is the Lord who made it;
    and at his command it hastens on its course.

⁶ He made the moon also, to serve in its season^[a]
    to mark the times and to be an everlasting sign.
⁷ From the moon comes the sign for feast days,
    a light that wanes when it has reached the full.