1 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.
An elderly man said to H.A. Ironside, “I will not go on unless I know I’m saved, or else know it’s hopeless to seek to be sure of it. I want a definite witness, something I can’t be mistaken about!” Ironside replied, “Suppose you had a vision of an angel who told you your sins were forgiven. Would that be enough to rest on?” “Yes, I think it would. An angel should be right.” Ironside continued, “But suppose on your deathbed Satan came and said, ‘I was that angel, transformed to deceive you.’ What would you say?” The man was speechless. Ironside then told him that God has given us something more dependable than the voice of an angel. He has given His Son, who died for our sins, and He has testified in His own Word that if we trust Him all our sins are gone. Ironside read I John 5:13, “You may know that you have eternal life.” Then he said, “Is that not enough to rest on? It is a letter from heaven expressly to you.” God’s Spirit used that to bring assurance to the man’s heart.
Our verse tells us that assurance comes from what is written.  It is taking God at His word that produces blessed assurance.   Jesus paid our sin debt.  We must put our trust in Him and Him alone!   Notice another source of assurance…
Not just the living WORD that we believe,  but also the living WITNESS that we received!
1 John 5:10  He that believeth on the Son of God hath the witness in himself: he that believeth not God hath made him a liar; because he believeth not the record that God gave of his Son.  The word from the scripture,  and the witness of the Spirit, will always agree!
Blessed assurance,  Jesus is mine… I know!  My prayer is you do as well.   AMEN!  Pastor