Perhaps, our cultural take on how one should react to miracles may yield misunderstanding of the Egyptians' reaction to the miracle of Moshe's rescue. I.e. while the Torah does not seem to present the situation as miraculous, our tradition tells us that Mitzrim indeed interpreted events of Moshe's rescue as miraculous and attributed him supernatural powers from that moment on. Moshe survived because he was an unusually big child. Because Moshe did not drown in the Nile river (an object of worship), egyptians felt that he had powers over it. Later Pharaoh considered himself a god and would not speak to Moshe if there was no known supernatural reputation about him. Therefore, Torah does indeed present the whole incident as miraculous from its very beginning by noting how egyptians reacted to it.