Nope, not in my opinion. Hey, if I were a God who created a universe with fixed physical laws. A world that is absolutely perfect which is an evidence of my existence. So, everybody knows there must be a Creator, God, Lord who made all this perfect building.

Then after a while (some million years) I would change some physical laws for a short time and then rechanging it to the normal way. This were an evidence of my imperfect existence. Why doing such nonsens? Only for making ONE person believing on me? And then this person travels through his world and kills all people who do not believe the same way? Haha, this is not a sign of the Lord but a sign of the devil...

The Lord told us to believe in us self. It's the devil who tells us again and again to believe his words, his signs, his suggestions. Miracle oil in random shapes or something like that are often a sign of the devil who is sneering at Jesus whenever he can. Please, do not believe to the Lord as a result of this miracle! Find God in your heart!!!