10 “If anyone is to go into captivity, into captivity they will go. If anyone is to be killeda with the sword, with the sword they will be killed.”bThis calls for patient endurance and faithfulness on the part of God’s people.

Read Revelation 13:10 Using Other Translations

He that leadeth into captivity shall go into captivity: he that killeth with the sword must be killed with the sword. Here is the patience and the faith of the saints.
If anyone is to be taken captive, to captivity he goes; if anyone is to be slain with the sword, with the sword must he be slain.Here is a call for the endurance and faith of the saints.
Anyone who is destined for prison will be taken to prison. Anyone destined to die by the sword will die by the sword. This means that God’s holy people must endure persecution patiently and remain faithful.