'Deserters' in the Bible

Then Nebuzaradan the captain of the bodyguard deported [into exile] the rest of the people who were left in the city and the deserters who had joined the king of Babylon, and the rest of the multitude.

Some of those who are [spiritually] wise and have insight will fall [as martyrs] in order to refine, to purge and to make those among God’s people pure, until the end time; because it is yet to come at the time appointed [by God].