They had heard of him and were interested, they weren't necessarily fully converted believers yet I don't think. If any of them hadn't witnessed him do an obvious miracle before (and I bet most of them hadn't) it would dispel any doubts they had, and give them a story to share with others.
Which is the weird part, he seemed to be trying to impress people at that point. Through performing flashy miracles and saying interesting
seditious things.
I mean, one of my favorite verses is Matthew 11:21
Woe to you, Chorazin! Woe to you, Bethsaida! For if the miracles that were performed in you had been performed in Tyre and Sidon, they would have repented long ago in sackcloth and ashes.
"Me-dammit, what does it take to convince these jokers?"
Ninja'd by Origami. But I still don't understand. He did these miracles in front of people then, so why not now? If it would destroy faith now, why not then?
I respectfully disagree about scientists not being convinced, by the way. "Christians believe got created the universe and our existence itself" is not a verifiable miracle. Changing pi to a repeating ascii message of "I'm YAHWEH, hi" would convince practically every scientist of the existence of *some* higher power. Many might consider it a trick by a powerful yet mischievous power, maybe aliens... So wouldn't free will still be intact?
And again, if such a display would break free will now, why not back then?