'Signs' in the Bible

Thus says Yahweh, "Don't learn the way of the nations, and don't be dismayed at the signs of the sky; for the nations are dismayed at them.

Set up road signs, make guideposts; set your heart toward the highway, even the way by which you went: turn again, virgin of Israel, turn again to these your cities.

who performed signs and wonders in the land of Egypt, even to this day, both in Israel and among [other] men; and made yourself a name, as in this day;

and brought forth your 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;