The number 5 is commonly associated with the idea of Grace or God's Goodness. Old Covenant man lived by the law, but the Grace of God is made manifest through the work of Christ Jesus, who fulfilled the law. The law was fully outlined by the first 5 books of the Bible. According to John 1:17 grace and truth come through Jesus and so, just as Jesus fulfilled that which is contained in the 5 books of the Pentateuch, He became the perfect picture of Grace.
* Symbol meanings provided by www.mydreamstories.com should not be used as a dream dictionary. They are for reference only and both dreamer and interpreter should be careful to listen to the voice of Holy Spirit as to what any particular symbol means in any specific dream.