Warfare in the Spirit is real. The first warfare for the congregation was in the Tabernacle in the wilderness:

Leviticus 4:21. And the LORD* spoke to Moses saying, 22. Take also a census of the sons of Gershon, throughout the houses of their fathers, by their families, 23. you will number them from thirty years old and upward until fifty years old, all that enter to perform the Warfare, to do the work in the Tent of Meeting.