Numbers 10:10 King James Version (KJV)

10 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.

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Psalm 81:3 King James Version (KJV)

3 Blow up the trumpet in the new moon, in the time appointed, on our solemn feast day.

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Isaiah 66:23 King James Version (KJV)

23 And it shall come to pass, that from one new moon to another, and from one sabbath to another, shall all flesh come to worship before me, saith the Lord.