Deuteronomy 13:3-4

you shall not listen to the words of that prophet or that dreamer of dreams; for the LORD your God is testing you to know whether you love the LORD your God with all your heart and mind and all your soul [your entire being]. You shall walk after the LORD your God and you shall fear [and worship] Him [with awe-filled reverence and profound respect], and you shall keep His commandments and you shall listen to His voice, and you shall serve Him, and cling to Him.