My bible study has centered in the OT these last three years. My teacher knows the culture of those times, and sometimes it almost seems I am with Joshua going into the promised land, or standing with the people waiting for Moses to come down from the mountain and wanting something I can actually see with my eyes to worship so I understand about the golden calves.
That said, it seems to me I can almost hear what our Triune God wants of us as we live in the world He created. (I think Jesus is One with the Father) We are to love the Lord with all our heart, with all our soul, and with all our might.
We are living among people who have most of their main interests different. They direct their life toward many other things, and maybe go to church if it is handy because there is a God, they say. They have fun parties, drive up in wonderful new cars. And yes, they have Halloween as part of the fun with witches and pranks. It was very inviting and seemed good in OT times, and it is very inviting and seems good in our times.
God set up a life for us to live, and God says to stay away from worldly life. The life pattern God gives is centered around love, families, church, food. God says this life brings joy, contentment, peace.