In Jewish synagogues, the trumpets are sounded 100 times with the last trump being blown until all air is used up. This perhaps is a picture of the end times. Shaul said in 1 Corinthians 15:51-52 NKJV, "But we shall all be changed — in a moment, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, and the dead will be raised incorruptible, and we shall be changed."
At the last trump, suggests that Yeshua will return on the Day of Blasting, Yom Teruah. The last trump is significant for the celebration of Yom Teruah. It is then that believers will put on immortality. 1 Corinthians 15:53 NKJV says, "For this corruptible must put on incorruption, and this mortal must put on immortality."
God and Yeshua will raise us from the dead. Yeshua is the Son of God as attested many times in the John, and He said in John 5:25 NKJV, "The dead will hear the voice of the Son of God; and those who hear will live." In John 5:28-29 Yeshua is referring to Himself, "For the hour is coming in which all who are in the graves will hear His voice and come forth – those who have done good, to the resurrection of life, and those who have done evil, to the resurrection of condemnation."