Deuteronomy 13:2

2 and the sign and the wonder hath come which he hath spoken of unto thee, saying, Let us go after other gods (which thou hast not known), and serve them,

Deuteronomy 13:2 Meaning and Commentary

Deuteronomy 13:2

And the sign and wonder come to pass whereof he spake unto
thee
The sign he promised to give, or the miracle he proposed to do, to show the reality of his mission, and the truth of his doctrine, which is performed, or seemingly performed, by legerdemain, by magic art, or by the help of the devil; which the Lord sometimes suffered for the trial of the faith and obedience of his people, and for the hardening of others in their unbelief, and which issues in their destruction; see ( 2 Thessalonians 2:9-12 ) ,

saying, let us go after other gods (which thou hast not known), and let
us serve them;
other gods besides the one living and true God, the Creator of all things; strange gods, the idols of the people, as the Targum of Jonathan; such as they had never heard of, nor had any knowledge of, nor any benefit from, as they had of the Lord their God. Now the doctrines of these, and of their worship, are what the false prophet or dreamer is supposed to come with, and inculcate into the minds of the people; and for the confirmation of which, and in order to draw them into the reception of them, and act according to them, he proposed to give a sign or wonder.

Deuteronomy 13:2 In-Context

1 `When there ariseth in your midst a prophet, or a dreamer of a dream, and he hath given unto thee a sign or wonder,
2 and the sign and the wonder hath come which he hath spoken of unto thee, saying, Let us go after other gods (which thou hast not known), and serve them,
3 thou dost not hearken unto the words of that prophet, or unto that dreamer of the dream, for Jehovah your God is trying you, to know whether ye are loving Jehovah your God with all your heart, and with all your soul;
4 after Jehovah your God ye walk, and Him ye fear, and His commands ye keep, and to His voice ye hearken, and Him ye serve, and to Him ye cleave.
5 `And that prophet, or that dreamer of the dream, is put to death, for he hath spoken apostacy against Jehovah your God (who is bringing you out of the land of Egypt, and hath ransomed you out of a house of servants), to drive you out of the way in which Jehovah thy God hath commanded thee to walk, and thou hast put away the evil thing from thy midst.
Young's Literal Translation is in the public domain.