Will angels gather the dead in Christ, the living believers, or both at the resurrection?

In passages describing the resurrection and the return of Christ, angels are sometimes described as gathering people. For example, Gospel of Matthew 24:31 says that the Son of Man will send His angels with a loud trumpet call, and they will gather His elect from the four winds. Meanwhile, First Epistle to the Thessalonians 4:16–17 describes the dead in Christ rising first, followed by the living believers being caught up. My question is: **Are angels described in scripture as gathering the dead in Christ from their graves, the living believers from the earth, or both?**