The Meaning of Numbers: The Number 120
The number 120 can symbolize a divinely appointed time of waiting. After God saw how sinful and dedicated to evil man had become after the garden of Eden, he determined a one hundred and twenty year period would be given for repentance and then the flood waters would come (Genesis 6:1 - 3).
The meaning of the number 120 is seen in its Exodus role when Israel left Egyptian bondage. Scripture states that the Israelites who left Egypt had 600,000 men (Exodus 12:37). When the Egyptians heard about their former slaves leaving the country they complained to Pharaoh, who then amassed 600 chariots to pursue the children of Israel (14:5 - 7). 600,000 is 120 times 5,000 and 600 is 120 times 5.
We also find 120 playing a part in the Book of Revelation. In the end time, God will save 12,000 from each of the tribes of Israel for 144,000 (120x1,200) total (Revelation 7).
Appearances of the number one-hundred twenty
After Jesus' resurrection and ascension to heaven, 120 disciples that were gathered in Jerusalem chose a successor to Judas Iscariot (who committed suicide) to be among the special eleven disciples who were witnesses of Christ's entire ministry (Acts 1:14 - 26).
How is the number 120 related to captivity?
One hundred and twenty is a factor in the number of Kingdom of Judah captives who returned to Jerusalem and the land of Palestine from Babylon. According to the book of Ezra, 42,360 captives (120x353) came back to resettle the land (Ezra 2:1, 64).