"Blessed assurance, Jesus is mine!
O what a fore taste of glory divine!
Heir of salvation, purchase of God,
Born of His Spirit, washed in His blood."

Assurance! What a wonderful word especially for a Christian. But what does it mean? It is described as: an assurance or guarantee; entire confidence; sure, true. Here are a couple definitions that I found concerning Believers: "The security of knowing that one's name is written in heaven."  'NKJV Study Bible'

I quote The Illustrated Dictionary of the Bible as follows:
"The state of being assured; freedom from doubt and uncertainty...It refers to the believer's full confidence and conviction that the penalty of his sin has been paid and that heaven has been secured as his eternal destiny by Christ's death and resurrection...Assurance means that the Christian not only possesses salvation, but that he also knows what he possesses--he is assured of his salvation."
Of this security 1 John 5:12 says, "He who has the Son has life. He who does not have the Son of God does not have life."

The path of assurance is--
Believing God's Word:
"For this reason we also thank God without ceasing, because when you received the word of God which you heard from us, you welcomed it not as the word of men, but as it is in truth, the word of God, which also effectively works in you who believe." 1 Thessalonians 5:13

Accepting Christ as Savior:
"That if you confess with your mouth the Lord Jesus and believe in your heart that God has raised Him from the dead, you will be saved. For with the heart one believes to righteousness and with the mouth confession is made to salvation." Romans 10:9-10

Standing upon God's promises:
Jesus speaking, "And I give them eternal life, and they shall never perish; neither shall anyone snatch them out of My hand. My Father, who has given them to Me, is greater than all; and no one is able to snatch them out of My Father's hand." John 10: 28-30

Desiring Spiritual things:
"As newborn babes, desire the pure milk of the word, that you may grow thereby." 1 Peter 2:2

Growing in grace:
2 Peter 1:3-11 tells of growth in Christ. (Read the whole section), "But also for this very reason, giving all diligence, add to your faith virtue, to virtue knowledge, to knowledge self-control, to self-control perseverance, to perseverance godliness, to godliness brotherly kindness, and to brotherly kindness love. For if these things are yours and abound, you will be neither barren nor unfruitful in the knowledge of our Lord Jesus Christ. For he who lacks these things is shortsighted, even to blindness, and has forgotten that he was purged from his old sins." Vs.5-9

Knowing life is changed:
"Therefore, if anyone is in Christ, he is a new creation; old things have passed away; behold, all things have become new." 2 Corinthians 5:17

Having inner peace and joy:
"'.There shall be a root of Jesse; And He who shall rise to reign over the Gentiles, In Him the Gentiles shall hope.'
Now may the God of hope fill you with all joy and peace in believing, that you may abound in hope by the power of the Holy Spirit." Rom 15:12-13

Living victorious:
"For whatever is born of God overcomes the world. And this is the victory that has overcome the world--our faith. Who is he who overcomes the world, but he who believes that Jesus is the Son of God." 1 John 5:4-5

We have the Spirit's testimony: (Read all of Romans 8 for it tells us so much of the Holy Spirit and sanctification.) "For you did not receive the spirit of bondage again to fear, but you received the Spirit of adoption by whom we cry out, Abba, Father. The Spirit Himself bears witness with our spirit that we are children of God."
Romans 8:15-16

We have absolute assurance! Read Romans 8:31-39 and rejoice!
"For I am persuaded that neither death nor life, nor angels nor principalities nor powers, nor things present nor things to come, nor height nor depth, nor any other created thing, shall be able to separate us from the love of God which is in Christ Jesus our Lord." Vs. 38-39

With grateful hearts we say, THANK YOU LORD! Amen