Deuteronomy 13:1-3

1“12If a prophet or a dreamer of dreams arises among you and gives you a sign or a wonder,

2and the sign or the wonder comes true, of which he spoke to you, saying, ‘3Let’s follow other gods (whom you have not known) and let’s serve them,’

3you shall not listen to the words of that prophet or dreamer of dreams; for the Lord your God is 4testing you to find out whether 5you love the Lord your God with all your heart and with all your soul.