The ox knows its owner and the donkey its master’s crib; but Israel does not know, My people do not consider.” says the Lord. Isaiah 1.3.
Therefore the wisdom of this world does not rise to the level of the intelligence of brutes. Yes, it sinks men below the level of brutes, when it is given full chance to develop
It is well to remember that it is not the wrong that another does that leads to evil feelings on our part, but the wrong that is in our own heart stirs up the resentment at an affront.
When we do not study the Bible for ourselves, we run the risk of forming beliefs based on the traditions and theories of men.
The Bible doctrine of the return of Jesus is one such truth that man has altered to fit his own pet theories.