By now, someone has crossed your mind, who you think may not be going to heaven. When we first get saved, we are so over the top that we usually scare people away with our new-found faith. We want so badly to tell others that we push them away with 'the gospel'. God's message of love is so gentle. He is a gentleman. He does not push and neither should we.
If however, you come across someone to whom you need to explain what has happened to you, there are some simple scriptures to use. They are known as the "Roman Road". Note: if someone does not believe the Word of God is true, then you are dealing with foolishness and you will need more experience and knowledge of God and His Word before truly dealing with that person. But here are a few scriptures you can use to explain your conversion to others who are receptive to the Word of God.
For all have sinned, and come short of the glory of God; Romans 3:23We all have sinned and fall short of God's purpose for our lives - to know Him and walk with Him.
For the wages of sin is death; but the gift of God is eternal life through Jesus Christ our Lord.
Wages are just payment... due reward... what one has coming because of labor. The just payment for our sin is death. Death here means a spiritual disconnect. When we are still in our sin, we have no life with God. We are alive physically but dead spiritually. If we continue in that condition, we will be separated from God for all eternity.
But God demonstrates his love toward us, in that, while we were yet sinners, Christ died for us.Romans 5:8
In a demonstration of His love for us, He gave His own life.
For whosoever shall call upon the name of the Lord shall be saved.Romans 10:13
Pretty simple here: Call on Him and He will save you.
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. For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation.Romans 10:9-10
That's it really. No rocket science; faith and confession is all it takes to become a child of God. Only believers will ever understand the change that takes place following the conversion experience. Give your testimony of what happened with you - the burden being lifted, the emptiness filled, the chains broken. Your testimony will be attractive to others and that will open their hearts to receive the Word of Truth.