The fundamental truth of the gospel is that Jesus has paid our sin debts, and salvation is free (Ephesians 2:8).  When you Trust Jesus, you follow Him.  Jesus is the God of creation.  He owns everything, but He chose to become as a servant (Philippians 2), to live as a homeless man (Luke 9:58), and to spend his time with broken people.  Following Jesus doesn't mean you have to be poor, but it does mean that you cannot serve riches.