Psalms 81:2-4
Context81:2 Sing 1 a song and play the tambourine,
the pleasant sounding harp, and the ten-stringed instrument!
81:3 Sound the ram’s horn on the day of the new moon, 2
and on the day of the full moon when our festival begins. 3
81:4 For observing the festival is a requirement for Israel; 4
it is an ordinance given by the God of Jacob.

