Not against us,
Is for us.”
ὃς γὰρ οὐκ ἔστιν καθ’ ἡμῶν, ὑπὲρ ἡμῶν ἐστιν.
This short saying is word for word in Luke, chapter 9:49, but not in Matthew. Mark indicated that Jesus said that whoever was not against them (ὃς γὰρ οὐκ ἔστιν καθ’ ἡμῶν), then he was for them (ὑπὲρ ἡμῶν ἐστιν). You were a friend until you became an enemy. If they were not against Jesus, then they must be for him.