Dr. R.G. Lee's list of conversion excuses and questions

18. Excuse: 

"I will take my chances"

Answer: God always has the last word. "Friend, how camest thou in hither not having a wedding garment? And he was speechless. Then said the king to the servants, Bind him hand and foot, and take him away, and cast him into outer darkness; there shall be weeping and gnashing of teeth there. (Matthew 22:12-13).

Nebuchadnezzar gave this testimony: "...the most High ruleth in the kingdom of men, and giveth it to whomsoever he will" (Daniel 4:17). And all the inhabitants of the earth are reputed as nothing: and he doeth according to his will in the army of heaven, and among the inhabitants of the earth: none can stay his hand, or say to him, What doest thou?" (Daniel 4:35).

Gods word has eternal force. 

Isaiah 55:11

so is my word that goes out from my mouth:
    It will not return to me empty,
but will accomplish what I desire
    and achieve the purpose for which I sent it.

A judgment must be rendered on each live lived.

John 5:27-29

And he has given him authority to judge because he is the Son of Man.

“Do not be amazed at this, for a time is coming when all who are in their graves will hear his voice and come out—those who have done what is good will rise to live, and those who have done what is evil will rise to be condemned.