If I could talk to my father one more time, I would tell him about what Christ did for me.  I would tell him how I was an adulterer and a fornicator and a liar and a murderer.  I would tell him how I deserved God's judgment:  the death penalty...eternity in hell.  I would tell him how God gave me a chance - He sent his only begotten son to die in my place.  I would tell him how Christ suffered, taking the punishment meant for me, dying in my place, setting me free.  I would tell him how I finally repented and had my sins washed away.  I would tell him how God has been cleaning me up since then, helping me to overcome my sinning ways.

I wish I could tell him what I know now, that there is a God, and he is loving and merciful and kind.  I would tell him of God's justice also.  That he doesn't allow us to sin willfully forever.  Eventually we have to repent and stop doing the things that are wrong.  I wish I could warn him that he was in danger, that you can't commit adultery for 50 years and still go to heaven.  I wish I could have warned him just once even.  I hate to think where my father is now.  

Someone probably told him that because he said a prayer at youth camp, he was OK.  But that was not the truth.  Hebrews 10:26 For if we go on sinning willfully after receiving the knowledge of the truth, there no longer remains a sacrifice for sins, 27 but a terrifying expectation of judgment and the fury of a fire which will consume the adversaries. 28 Anyone who has ignored the Law of Moses is put to death without mercy on the testimony of two or three witnesses. 29 How much more severe punishment do you think he will deserve who has trampled underfoot the Son of God, and has regarded as unclean the blood of the covenant by which he was sanctified, and has insulted the Spirit of grace? 30 For we know Him who said, “Vengeance is Mine, I will repay.” And again, “The Lord will judge His people.” 31 It is a terrifying thing to fall into the hands of the living God.