Needs context. What is the connotation of "Christ is King" when spoken to, for example:
- a fellow Christian? (A core tenet of the faith.)
- a Roman soldier at the door with a statuette of Caesar and a pinch of incense? ("No, I will not give the Emperor what is due to Jesus alone.")
- Ben Shapiro, by Candace Owens? ("Joooooooos!")
The "Christ is King" controversy is not over whether Christ is indeed King (motte-and-bailey fallacy notwithstanding), but the intent of those who wave the slogan in the face of others, particularly Jews--in which the slogan
sounds like a Christian proclamation, but really means "up yours." And that's the context in which Cruz is speaking.