Satan told Eve that she would not die if she ate from the forbidden tree. Eve ate and died, and Satan is still lying today.
Hebrews 6:4-6 When you find men who have been enlightened, who have experienced salvation and received the Holy Spirit, who have known the wholesome nourishment of the Word of God and touched the spiritual resources of the eternal world and who then fall away, it proves impossible to make them repent as they did at first. For they are re-crucifying the Son of God in their own souls, and by their conduct exposing him to shame and contempt.(The New Testament in Modern English by J.B. Phillips)
Hebrews 6:4-6 But what about people who turn away after they have already seen the light and have received the gift from heaven and have shared in the Holy Spirit? What about those who turn away after they have received the good message of God and the powers of the future world? There is no way to bring them back. What they are doing is the same as nailing the Son of God to a cross and insulting him in public!(Contemporary English Version)
Hebrews 6:4-6 After people have left the way of Christ, can you make them change their lives again? I am talking about people who once learned the truth, received God’s gift, and shared in the Holy Spirit. They were blessed to hear God’s good message and see the great power of his new world. But then they left it all behind, and it is not possible to make them change again. That’s because those who leave Christ are nailing him to the cross again, shaming him before everyone.(ERV-Easy to Read Version)
Hebrews 6:4-6 It is impossible to restore the changed heart of the one who has fallen from faith—who has already been enlightened, has tasted the gift of new life from God, has shared in the power of the Holy Spirit, and has known the goodness of God’s revelation and the powers of the coming age. If such a person falls away, it’s as though that one were crucifying the Son of God all over again and holding Him up to ridicule.(THE VOICE)
It takes a skilled professional, and willing subjects, to convince men that apostasy does not apply to Christians.