The Gospel of Jesus Christ will always be highly offensive and in opposition to every man-made religion/belief. And yet, God accomplishes the salvation of all His elect people in often surprising ways, through the use of His means.
Each of us is influenced by our surrounding culture far more than we realize. Only the Word of God can give us the discernment needed to divide truth from error.
Acts 16:1-15: God is altogether active, even in the closing of some doors, as He has a strategy to open doors that no man can shut. His strategies always come to pass.