In the Egyptian this is represented by a symbol like a gecko, signifying a long period of time.
The number 40 represents a period of probation, trial, and chastisement. The numbers that are divided from 40 are 5 and 8, these signify (5) grace, ending of a period in (8) revival or other words, (8) a new beginning. The other numbers that are divided from 40, 4 and 10, are also significant representing (4) the creation of something new and (10) perfection or completeness.
In the forty days and nights of Noah's flood, the flood then represents our baptism after conversion, the grace we received and the new beginning of our perfection in Jesus Christ.