This question raises perhaps one of the biggest fears that Christians struggle with. What if I were to fall away from my faith to such an extent that I never recover it and so lose my salvation? It is the very fear of this that robs many believers of assurance and with that of joy. So, I am going to include a few articles in the coming days looking at this question. In this first article, I want to explain why I believe it is not possible to lose your salvation.
There are three important Bible verses that I would like to highlight.
8 For by grace you have been saved through faith. And this is not your own doing; it is the gift of God,
“Jesus said to them, “I am the bread of life; whoever comes to me shall not hunger, and whoever believes in me shall never thirst. But I said to you that you have seen me and yet do not believe. All that the Father gives me will come to me, and whoever comes to me I will never cast out. For I have come down from heaven, not to do my own will but the will of him who sent me. And this is the will of him who sent me, that I should lose nothing of all that he has given me, but raise it up on the last day. For this is the will of my Father, that everyone who looks on the Son and believes in him should have eternal life, and I will raise him up on the last day.”
“24 Now to him who is able to keep you from stumbling and to present you blameless before the presence of his glory with great joy, 25 to the only God, our Savior, through Jesus Christ our Lord, be glory, majesty, dominion, and authority, before all time[h] and now and forever. Amen.”
The key thing to notice in each of these passages is where responsibility lies. The Biblical understanding of our condition due to sin is that we were spiritually dead. The whole point about a dead body is that it is completely passive in any process. We were unable to help ourselves and therefore were essentially passive in the process of salvation. God through his Holy Spirit has breathed new life into us.
Because of this, salvation can be seen as fully God’s initiative and so this is seen to apply not just to how we come into God’s family but also how we stay in. Who is responsible for ensuring that we remain faithful? The answer is that it is Jesus. This is demonstrated first of all by the fact that the Father has given us to The Son as a precious gift. The Son values this gift and will not lose it. The Father and Son are united in will with the purpose of seeing us raised up at the last day.
The responsibility lies with God and so too does the ability. He is the one who has the ability to prevent us from falling. Furthermore, Christ is able to present us spotless before the Father. So, not only are we a gift from the Father to the Son which he treasures and takes care of but we are also intended to be a gift back to the Father.
The emphasis therefore is not on my ability to stay saved but on Christ’s ability to keep me safe. This is good news, I may not trust my own abilities but I can have every confidence in his.
 Ephesians 2:8
 John 6:35-40.
 Jude: 24-25
Here is some Afternoon Tea discussion on the topic