'Signs' in the Bible

The Lord said to Moses, “How long will these people treat me disrespectfully and reject Me? And how long will they not believe in Me, despite all the [miraculous] signs which I have performed among them?

Surely all the men who have seen My glory and My [miraculous] signs which I performed in Egypt and in the wilderness, yet have put Me to the test these ten times and have not listened to My voice,

When Balaam saw that it pleased the Lord to bless Israel, he did not go as he had done each time before [superstitiously] to seek omens and signs [in the natural world], but he set his face toward the wilderness (desert).