Think how solemnly God speaks in Hebrews 12:25: "See that ye refuse not Him that speaketh: for if they escaped not who refused Him that spake on earth, much more shall not we escape, if we turn away from Him that speaketh from heaven."
God is speaking to you. What answer are you going to make? Are you going to tell Him that you will enjoy the world for a little while yet, and when eternity is drawing near, you will think about being converted?
If this is your answer, beware. "God is not mocked: for whatsoever a man soweth, that shall he also reap." Galatians 6:7.
You may go very suddenly into a lost eternity. "He, that being often reproved hardeneth his neck, shall suddenly be destroyed, and that without remedy." Proverbs 29:1.
Come then, now, before it is forever too late! "Behold, now is the accepted time; behold, now is the day of salvation." 2 Corinthians 6:2.