A memorial of blowing of trumpets - This is generally called the feast of trumpets; and as it took place on the first day of the seventh month, Tisri, which answers to September, which month was the commencement of what was called the civil year, the feast probably had no other design than to celebrate the commencement of that year, if indeed such a distinction obtained among the ancient Jews. See the note on Exodus 12:2. Some think creation began at this time.

in the seventh

Numbers 10:10 Also in the day of your gladness, and in your solemn days, and in the beginnings of your months...

Numbers 29:1-6 And in the seventh month, on the first day of the month, you shall have an holy convocation; you shall do no servile work...

1 Chronicles 15:28 Thus all Israel brought up the ark of the covenant of the LORD with shouting, and with sound of the cornet, and with trumpets...

2 Chronicles 5:13 It came even to pass, as the trumpeters and singers were as one, to make one sound to be heard in praising and thanking the LORD...

Ezra 3:6 From the first day of the seventh month began they to offer burnt offerings to the LORD...

Psalm 81:1-4 Sing aloud to God our strength: make a joyful noise to the God of Jacob...

Psalm 98:6 With trumpets and sound of cornet make a joyful noise before the LORD, the King.

Isaiah 27:13 And it shall come to pass in that day, that the great trumpet shall be blown...

1 Corinthians 15:52 In a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible...

1 Thessalonians 4:16 For the Lord himself shall descend from heaven with a shout, with the voice of the archangel, and with the trump of God...

a memorial Zichron terooah, here rendered `a memorial of blowing the trumpets' properly signifies a memorial of triumph or shouting for joy. This festival is generally called the feast of trumpets; and though the Scriptures have not expressly declared the reason of its celebration, yet, as it fell in the seventh month of the sacred year, which was the first of the civil year, that is, the month Tisri, answering to our September, the opinion very generally embraced by both Jews and Christians is, that it was a memorial of the creation of the world, at which `the sons of God shouted for joy,' (job

38:7); and which is supposed, not altogether without reason, to have been at this season of the year. The month Tisri was not only anciently, but still is, reckoned by the Jews the first month of the year; and the feast of tabernacles, kept in this month; was said to be, as it is correctly rendered in the margin, `at the revolution of the year,' (ex

34:22) importing, that at this season the year had revolved, and was beginning anew. So that this feast was the new year's day, on which the people rejoiced in a grateful remembrance of God's benefits, and implored his blessing for the future year.

Leviticus 25:9 Then shall you cause the trumpet of the jubilee to sound on the tenth day of the seventh month...

The Deputation from Jerusalem - the Three Sects of the Pharisees, Sadducees, and Essenes - Examination of their Distinctive Doctrines.
APART from the repulsively carnal form which it had taken, there is something absolutely sublime in the continuance and intensity of the Jewish expectation of the Messiah. It outlived not only the delay of long centuries, but the persecutions and scattering of the people; it continued under the disappointment of the Maccabees, the rule of a Herod, the administration of a corrupt and contemptible Priesthood, and, finally, the government of Rome as represented by a Pilate; nay, it grew in intensity …
Alfred Edersheim—The Life and Times of Jesus the Messiah