While the text seems straightforward enough, the identity of the 144,000 is a matter of great debate. Whatever the case, though, it is clear that these are God's elect. As those He has predestined for His purposes, He instructs His angels concerning them. We note, then, that the holy angels restrain judgment for the sake of the elect, and the holy angels help with the sealing of the elect. Let's dig in to see if we can learn more.