Question asked: “What was the purpose of JESUS coming to the world ?”

Jesus entered Time in fulfillment of Genesis 3:15 in order that He, born of the seed of the woman, would “destroy the works of Satan” – (death, Hell, the grave) (1 John 3:8b) via a battle strategy that was ordained “before Time began” (2 Timothy 1:8); that is, the Gospel which is first pictured for humanity in Genesis 3:21 where Elohim, Himself, would shed innocent blood to provide mankind a gifted, imputed, robe of righteousness (2 Corinthians 5:21) while rejecting self-righteous works as righteousness exemplified by Adam as he attempted to cover his own shame and sin through the application of fig leaves (Ephesians 2:8-9).

Jesus successfully completed His divine mission at Golgotha 4000-years subsequent to Genesis 3:15 via the shedding of His innocent blood as atonement for sin (Leviticus 17:11; 1 Peter 1:18-19). In fact, our entire creation, the creation narrative, is the resultant of a Spiritual WAR that was initiated by an anointed cherub angel (Satan, Revelation 12; Ezekiel 28:11-15) before Time began. This Earth is simply a temporary repository for the war between good v. evil and the Earth will continue until such time Elohim restores holiness and peace to His Kingdom and accomplishes His eschatological will upon this Earth.