Forty is a special number.
for example
In chinese language, 40 means that it is a fact. (事實)
In Bible, God’s word. God teach human to obey Sabbth day for 40 years. Exodus 16:35
In Bible, God and Mose stay together 40 days and Nights;created Ten Commandments. Exodus 35:28
In Bible,Mose send 12 detectors to detect Canaan. After 40 days, they came back. Numer 13:25
In Bible,God is leading people in the wilderness for 40 years. Deuteronomy 29:5
In Bible, JESUS get tempted by Satan for 40 days. Matthew 4:2
