I'm certainly no expert on Cocceius, but according to Van Asselt he believed (Summa Doctrinae, 629) that "the teaching of the Chiliasts, that the saints will be bodily resurrected in order to set up an earthly kingdom before the final judgment, must be repudiated. This is a Jewish error that arises from the idea that there will be a resurrection of the dead in the land of Israel, and in the days of the Messiah before the general judgment." (The Federal Theology of Johannes Cocceius, 50f)