If you died today, are you 100% sure that you would go to Heaven?
You can be saved and know it.
These things have I written unto you
that believe on the name of the Son of God;
that ye may know that ye have eternal life - 1 John 5:13 

Here’s how…

1)  You need to know that YOU are a sinner.

• For all have sinned, and come short of the glory of God; - Romans 3:23
  Thus, all men are guilty.  A man doesn’t have to become guilty, he is born guilty
                                  (Psalms 51:5, Ephesians 2:1, Isaiah 64:7).
  The Bible says in Romans 3:12 that “There is none that doeth good, no, not one.”

2)  There is a penalty for sin.

• The wages of sin is death - Romans 6:23
  Men are sinners; therefore, men are “dead in…sins”, “condemned already”.
  Because of this fact, they already deserve Hell.
  The penalty for sin is “death”; this death is the “second death”, which is eternity in Hell
                                  (Revelation 20:14,15; 21:8).
  At this point, the situation is grim.  Man is born guilty and on his way to Hell.
  There is nothing he can do about it because a sinner cannot save himself.

3)  Jesus Christ paid the penalty for you.

• But God commendeth his love toward us, in that, while we were yet sinners, Christ died for us. - Romans 5:8
  Because of His “great love” and our need for a perfect substitute, Christ died on the cross in our place.
  He shed His precious blood to wash away our sin.

4)  Jesus Christ offers you salvation as a FREE gift.

• But the GIFT of God is eternal life through Jesus Christ our Lord. - Romans 6:23
  All you can do with a gift is receive it or reject it.
  You do not earn gifts.  You cannot purchase, merit, trade or bargain for a gift.
  Once it is yours, it is yours.
  How do you receive it?
• That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved. - Romans 10:9
• For whosoever shall call upon the name of the Lord shall be saved. - Romans 10:13