I’ve always thought it was neat how different numbers in the Bible meant different things. It seems that God is trying to reveal something or give us a deeper understanding of scripture with their patterns. For example, the number 7 seems to symbolize something being “completed or finished” as well as divine perfection. The first use of seven in the Bible was found in Genesis 1 when God created the earth in 6 days and rested on the seventh and set it aside as the Sabbath, the holy day of rest. God also used seven as a time period for His mandates. For example, animal sacrificed were to be at least 7 days old (Exodus 22:30), the leper Naaman was to bath seven times for restoration (2 Kings 5:10), Joshua needed to march Jericho for seven
