This page was last updated on 21 July, 2017.
This is one of the most disputed verses….
Isa 30:26 And the light of the white moonshine comes to be as the light of the warm sunshine, and the light of the warm sunshine will become sevenfold, as the light of seven days, in the day when Yahweh will bind up the break of His people, and the transfixed of their smiting will He heal."
Isa 30:26 Moreover the light of the moon shall be as the light of the sun, and the light of the sun shall be sevenfold, as the light of seven days, in the day that the LORD binds up the breach of his people, and heals the stroke of their wound.
Song 6:10 Who is she that looks forth as the morning, fair as the moon, clear as the sun, and terrible as an army with banners?
1) moon (as white)
Clearly the moon described in the above verses is bright full moon.
Ps 81:3 Blow up the trumpet in the new moon, in the time appointed, on our solemn feast day.
Psalm 81 :3 Blow the trumpet at the new moon, in the glorious day of your feast.
Ps 81:3 Blow the trumpet at the new moon, At the full moon, on our feast-
1) the new moon, month, monthly
1a) the first day of the month
1b) the lunar month
kese' / keseh
1) full moon
Clearly there is big disagreement between translators unless time appointed is during the full moon.
He sent again: The wicked of them will repent, pray, and will be listened to. And they answered: He has already appointed a time for repenting, as it reads [Prov. 7:19]: "By the day of kesa only will he return," and the term kesa means "an appointed time," as it reads [Ps. 81:4]: "Blow on the new moon, the cornet at the time appointed (kesa) on the day of our feast."
Can it get any clearer?
The trumpet is blown at new moon which is called the appointed time.
Conclusion: Ps 81:3 is about one single feast. New Moon Day.
New Moon = feast = time appointed = when the trumpet is sounded.