'Sign' in the Bible

And he said, For I will be with thee; and this shall be the sign to thee that I have sent thee: when thou hast brought forth the people out of Egypt, ye shall serve God upon this mountain.

And it shall come to pass, if they will not believe thee, neither hearken to the voice of the first sign, that they will believe the voice of the other sign.

And I will put a separation between my people and thy people; to-morrow shall this sign be.

And the blood shall be for you as a sign on the houses in which ye are; and when I see the blood, I will pass over you; and the plague shall not be among you for destruction, when I smite the land of Egypt.

And it shall be for a sign to thee on thy hand, and for a memorial between thine eyes, that the law of Jehovah may be in thy mouth; for with a powerful hand hath Jehovah brought thee out of Egypt.

And it shall be for a sign on thy hand, and for frontlets between thine eyes, for with a powerful hand Jehovah brought us forth out of Egypt.

And thou, speak thou unto the children of Israel, saying, Surely my sabbaths shall ye keep; for this is a sign between me and you throughout your generations, that ye may know that it is I, Jehovah, who do hallow you.

It shall be a sign between me and the children of Israel for ever; for in six days Jehovah made the heavens and the earth, and on the seventh day he rested, and was refreshed.