Deuteronomy 13:1-3

Young's Literal Translation

13 `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;