1Th 4:15-17 describes "the coming (parousia, 3952) of the Lord" v15 "Himself with the voice of an archangel and with the trumpet of God." v16 And the dead and alive "shall be caught up together "in the clouds to meet the Lord in the air." Followed by 1Th 3:13b "...before our God and Father at the coming of our Lord Jesus Christ with all His saints."
Matt 24:30, 31 describes the coming (parousia, 3952) of the Son of Man to earth. 30 "Then the sign of the Son of Man will appear (phaino, 5316) in heaven, and then all the tribes of the earth will mourn, and they will see the Son of Man coming on the clouds of heaven with power and great glory. 31 And He will send His angels with a great sound of a trumpet and they gather to gather His elect from the four winds, from one end of heaven to the other."