'Sign' in the Bible

He replied, "Surely I will be with you, and this will be the sign to you that I have sent you: When you bring the people out of Egypt, you and they will serve God on this mountain."

"If they do not believe you or pay attention to the former sign, then they may believe the latter sign.

I will put a division between my people and your people. This sign will take place tomorrow."'"

The blood will be a sign for you on the houses where you are, so that when I see the blood I will pass over you, and this plague will not fall on you to destroy you when I attack the land of Egypt.

It will be a sign for you on your hand and a memorial on your forehead, so that the law of the Lord may be in your mouth, for with a mighty hand the Lord brought you out of Egypt.

It will be for a sign on your hand and for frontlets on your forehead, for with a mighty hand the Lord brought us out of Egypt."

"Tell the Israelites, 'Surely you must keep my Sabbaths, for it is a sign between me and you throughout your generations, that you may know that I am the Lord who sanctifies you.

It is a sign between me and the Israelites forever; for in six days the Lord made the heavens and the earth, and on the seventh day he rested and was refreshed.'"