Psalms 81:3-5

81:3 Sound the ram’s horn on the day of the new moon,

and on the day of the full moon when our festival begins.

81:4 For observing the festival is a requirement for Israel;

it is an ordinance given by the God of Jacob.

81:5 He decreed it as a regulation in Joseph,

when he attacked the land of Egypt.

I heard a voice I did not recognize.