So "you" had to "believe". Hmmm... How about that. You had to accept God's truth/gift. Have you read the verse where it says in the latter days, some would "fall away". How is that possible? Heathen can't possible fall away. And according to election theology, the elect can't fall away either? Another huge hole.
Many fell away in the latter days (already happened), and they were neither the heathen or the elect, they were apostasizers.
And if God has numbered a man among His children that man will, at a time of God's choosing, know his salvation has been won by Christ on the cross and he will believe.
Men are not stronger than the Holy Spirit -- "There is one lawgiver, who is able to save and to destroy" (James 4:12).