There are 3 impossibilites that God saved you from in Romans 5.
Peace and Joy
1 Therefore, since we have been justified through faith, we have peace with God through our Lord Jesus Christ,
You already have peace with God. He is not at war with you.
6 You see, at just the right time, when we were still powerless, Christ died for the ungodly.
You could do nothing to get this peace.
It was given to you when you were “powerless”. This is not a peace as in a nice feeling. It is more like a treaty. No king would grant you peace when you are “powerless”. They usually would only talk terms of peace with you when you still have some form of power. Here peace is given to you whilst you are powerless.
10 For if, when we were God’s enemies, we were reconciled to him through the death of his Son, how much more, having been reconciled, shall we be saved through his life! 11 Not only is this so, but we also rejoice in God through our Lord Jesus Christ, through whom we have now received reconciliation.
If God saves us whilst we were his enemies, by reconciliation in his death, how can you now who have the living Christ in you, lose your salvation?
You are already at peace with God. That happened to you when you were:
3. Dead in your sins.
Can you now be worse off than the above?
8 But God demonstrates his own love for us in this: While we were still sinners, Christ died for us.
The Father of Jesus chose to save you despite of the above impossibilities. There are those who tell you that when you are unfaithful, God would then turn against you.
Even if you now deny Jesus, you can’t be worst off than, being powerless, enemies and dead in your sins, can you?
The treaty is already signed by the blood of the Lamb. It’s forever. You will still have peace with God.