It is a vain man-exalting philosophically based precept elevated to Bible doctrine when it is not in the Bible at all.And you say the concept of free will is worldly, lol.
John 3 verse 6, Romans 8 verse 7, Galatians 5 verse 17, 2 Timothy 3 verse 13, Romans 3 verse 18 ~ Flesh is born of flesh, but spirit is born of the Spirit. The mind of the flesh is hostile to God: It does not submit to God’s law, nor can it do so. The flesh craves what is contrary to the Spirit, and the Spirit what is contrary to the flesh. They are opposed to each other. Evil men and imposters go from bad to worse, deceiving and being deceived. There is no fear of God before their eyes.