You must be born again.
John 3:3 Jesus answered and said unto him, "Verily, verily, I say unto thee, Except a man be born again, he cannot see the kingdom of God."
You must believe that you are a sinner.
Romans 3:23 For all have sinned and come short of the glory of God.
You must believe that Jesus Christ died for your sins.
Romans 5:8 But God commendeth [showed] his love toward us, in that, while we were yet sinners, Christ died for us.
You must repent of your sins.
Luke 13:3 "I tell you, Nay: but, except ye repent, ye shall all likewise perish."
You must believe that Jesus Christ is the Son of God.
John 20:31 But these are written, that ye might believe that Jesus is the Christ, the Son of God; and that believing ye might have life through his name.
You must call on the Lord by faith, believing that He will save you.
Romans 10:13 For whosoever shall call upon the name of the Lord shall be saved.
1st John 5:13 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, and that ye may believe on the name of the Son of God.