Psalm 81:3 in the King James Version
Blow up the trumpet in the new moon, in the time appointed, on our solemn feast day.
Context
2 Raise a song, and bring here the tambourine, the pleasant lyre with the harp.
3 Blow the trumpet at the New Moon, at the full moon, on our feast day.
4 For it is a statute for Israel, an ordinance of the God of Jacob.