'Signs' in the Bible

thus saith Jehovah, Learn not the way of the nations, and be not dismayed at the signs of heaven; for the nations are dismayed at them.

who didst set signs and wonders in the land of Egypt, even unto this day, both in Israel and among other men; and madest thee a name, as at this day;

and didst bring forth thy people Israel out of the land of Egypt with signs, and with wonders, and with a strong hand, and with an outstretched arm, and with great terror;