Hebrews 4:7 "Again, He limiteth a certain day, saying in David, "To day," after so long a time; as it is said, "to day if ye will hear His voice, harden not your hearts."This is saying that there is a time when a person has waited just one day to long. And if you are waiting for that certain day to make up your mind, Paul is saying that this day will not come. There is a limit to how long God will wait on a person, and then He will just leave them along. This verse comes from Psalm 95:7, 8.Psalm 95:7 "For he is our God; And we are the People of His pasture, and the sheep of His hand. To day if ye will hear His voice,"Psalm 95:8 "Harden not your heart, as in the provocation, and as in the day of temptation in the wilderness:"There is a day coming when it will be to late, and the result of delay then will be a quick walk into the fire. That day is the close of the Millennium age. However there will also be a time when the Spirit of God will leave you alone and not disturb your conscience. He will allow you to go on sinning with a clear conscience, and at that time it has been one day to late. When the Spirit of God is beckoning to you, you had better not put Him off. Only a fool will wait and continue to enjoy the things of the world and turn their back on God's offer to them of eternal life. Any pleasure you may get from that roller coaster ride of this world will be very short lived.I have met many like this who always say I'll think about it tomarrow I to busy or having to much fun.