If you didn’t God would not say, “TODAY IF YOU HEAR HIS VOICE, DO NOT HARDEN YOUR HEARTS, AS WHEN THEY PROVOKED ME.” Heb 3:15
Do you think predestined means that God just arbitrarily hardens people to go to hell? Why then would God say, “7Therefore, just as the Holy Spirit says, ‘TODAY IF YOU HEAR HIS VOICE, 8DO NOT HARDEN YOUR HEARTS AS WHEN THEY PROVOKED ME, AS IN THE DAY OF TRIAL IN THE WILDERNESS,'” Hebrews 3:7-8
If a heart is hardened, it’s not because God zapped it to be hard. It’s because you are still carnal and refuse to embrace God’s wisdom for your life. God doesn’t want you friends with the world. But you want to be friends with the world. And so you harden your heart. Don’t, stop, soften your heart and follow God while you still can.