Abraham and the Apostles came unto Him by first being regenerated and drawn by the Father..
Yes He gave blessings and curses and for those who are lost in unbelief will be curses.. Man has no excuse but man is also held in bondage to sin and to their Master Satan and can not come unto the Father until the Father draws him (those are the words of Yeshua). Man held in bondage is called by the law to repent, the law is first a tutor to the unbelievers but man will never seek God because of Sin and we are told that in Psalm 53 "God looked down from heaven upon the children of men, to see if there were any that did understand, that did seek God. Every one of them is gone back: they are altogether become filthy; there is none that doeth good, no, not one." It says No one seeks God and no one does good.. So it is God who draws the sinner and regenerates them first to obedience..
Paul said the same thing quoting from Psalm 53 in Romans 3:10-12 "As it is written, There is none righteous, no, not one: There is none that understandeth, there is none that seeketh after God. They are all gone out of the way, they are together become unprofitable; there is none that doeth good, no, not one."
Regeneration First, Repentance Second, and Obedience Third.. The Spirit dwells within by being Sent by the Father so that the person will be free from sin and set at liberty to obey the Son.
Michael
P.S. This is my last post on this subject just because it is off topic with the thread.. I do not want to further derail the thread.. If one wants to talk about Salvation, Drawing of the Father to the Son, Election, and how we are saved, etc, We can start another thread..