A few thoughts:
1) Salvation is Gods domain. It is ALL His work. It is a mystery to us.
2) Catholics tend to deny assurance of salvation, protestants tend to lean on once saved always saved
3) There is REAL assurance of salvation and FALSE assurance of salvation. God’s word speaks to both.
4) I can’t imagine a Christian not having assurance of salvation. If not , you have no solid ground. Your salvation depends on if you did the right things before you died, or how you feel that day.
5) So the REAL QUESTION is do you have real assurance of salvation or false assurance? What does God say on the matter? It is a question worthy of much reading and reflecting.
We are assured salvation if we abide in his love.