Origen

“ Children, too, who are altogether unaffected by such emotions, [6] either following their parents, or perhaps attracted also by His divinity, in order that it might be implanted within them, became His followers along with their parents. But let it be granted that Christians were few in number at the beginning, how does that help to prove that Christians would be unwilling to make all men believe the doctrine of the Gospel? ”

“ For what stirred up the envy of the Jews against Jesus, and aroused them to conspire against Him, was the great number of those who followed Him into the wilderness,—five thousand men on one occasion, and four thousand on another, having attended Him thither, without including the women and children. ”