What is the symbolism behind the No 40

I am looking for someone to help me answer these questions

WHY 40!!!

  1. Why Noah built the Ark in 40 days.

  2. Why the rain/storm lasted for 40days.

  3. Why the Israelites walked through the desert for 40 years.

  4. Why the tower of barbel was built in 40 days.

  5. Why Jesus Christ fasted for 40days.

  6. Why Jesus Christ ascended to heaven after 40 days,

  7. Why Moses had to spend 40 days with God, and fasting before he got the 10 Commandments Tablets

  8. Why it took 40 days threat from Goliath against the Army of Israel before he was killed by David

  9. Why David later had a total reign of 40 years over the nation of Israel

  10. Why Elijah had to trek and fast for 40 days running away from Jezebel

  11. Why life begins at 40.

  12. Why even Pass mark starts at 40.
    What’s so special about 40???

  13. Why siku za mwizi ni 40

My elder brother had a big financial breakthrough when he hit 40 in 2020, strangely during covid when people were going through financial meltdown… so for him I can attest.

40 it is.

Usisahau Quarantine or quarantina is 40 days,.From last menstruation to gestation is 40 weeks and the body requires 40 days irudi form after kuzaa. Muslims and some religion mourning period is 40days,And in science ‘negative forty’(-40) is the temperature at which the Celsius and Fahrenheit scales correspond: - 40 Degrees C = - 40 Degrees F. Indians consider the number 40 as hapiness. Maliar za sura kupindukia ziko fourty 40.

40 is the number of maturity.
Coolio had a gang of 40(MHSRIP).

Hehehe