Let us celebrate with trumpets, praise and dancing.
It is ordained for our Testimony!!
"3 Blow up the trumpet in the new moon, in the time appointed, on our solemn feast day.
4 For this was a statute for Israel, and a law of the God of Jacob.
5 This he ordained in Joseph for a testimony, when he went out through the land of Egypt: where I heard a language that I understood not". - Psalms 81:3-5
It is to turn our offerings into a memorial!!
"Also in the day of your gladness, and in your solemn days, and in the beginnings of your months, ye shall blow with the trumpets over your burnt offerings, and over the sacrifices of your peace offerings; that they may be to you for a memorial before your God: I am the LORD your God". - Numbers 10:10