~ Shun Idolatry~
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.

Bible Gateway:
https://www.biblegateway.com/passage/?search=Deuteronomy+13&version=AMP
Bible Hub Commentary Deuteronomy 13:4
https://biblehub.com/commentaries/deuteronomy/13-4.htm
~MacLaren's Expositions~
Genesis - WITH, BEFORE, AFTER
‘Enoch walked with God,’- Genesis 5:22.
‘Walk before Me.’- Genesis 17:1.
‘Ye shall walk after the Lord your God.’- Deuteronomy 13:4.

You will have anticipated, I suppose, my purpose in doing what I very seldom do-cutting little snippets out of different verses and putting them together. You see that these three fragments, in their resemblances and in their differences, are equally significant and instructive. They concur in regarding life as a walk-a metaphor which expresses continuity, so that every man’s life is a whole, which expresses progress, which expresses change, and which implies a goal. They agree in saying that God must he brought into a life somehow, and in some aspect, if that life is to be anything else but an aimless wandering, if it is to tend to the point to which every human life should attain. But then they diverge, and, if we put them together, they say to us that there are three different ways in which we ought to bring God into our life. We should ‘walk with Him,’ like Enoch; we should ‘walk before’ Him, as Abraham was bade to do; and we should ‘walk after’ Him, as the command to do was given to all Israel. And these three prepositions, with, before, after, attached to the general idea of life as a walk, give us a triple aspect-which yet is, of course, fundamentally, one-of the way in which life may be ennobled, dignified, calmed, hallowed, focussed, and concentrated by the various relations into which we enter with Him. So I take the three of them.