Technically, no Christian was in the crowd, they were all Jews, as Christians didn't become a thing until after Christ.

But also, I wasn't trying to be literal, I was referring more to metaphorically, as there are a lot of Christians nowadays who have religion, but lack relationship with God, even though the whole point of Jesus was to reconcile humanity with the Father, bringing the gap so we no longer have to stay away, but can freely go directly to the Father, through Christ who's sacrifice covers all our sins and makes us perfect in the eyes of the Father, since that's the only way to get to Him, and His whole thing is relationship.