The truth that man can choose to walk away from their faith the same way they chose the receive it. You cannot ''loose your salvation'', but you can choose to give it back
Just like people we must check the fruit of doctrines, and eternal security produces bad fruit.
Here's an example of giving God back His salvation with sincerety.
Lord I appreciate your great salvation and the fact that you gave it freely to me by grace. I did not deserve your forgiveness and cleansing from sin, but I just don't have what it takes, like others do, to maintain it in my life. I seem to have no power over certain sins in my life and it would not be fair to you or other believers if I kept failing and at the same time profess myself to be a Christian or brother in Christ. Because of this inability on my part to keep myself in the grace and love of God and being unable to discipline myself through sanctification, I have no alternative but to give back freely what you have given me by grace. I do not know what you will do about the sins you have cleansed and forgiven me for, but if you have to impute them back to me then I will freely receive those sins back in my life.
- Please receive back your righteousness that you imputed to me when I believed.
- Please take back the gift of eternal life that you have given me.
- Please receive back your Holy Spirit that has been totally grieved in my life that you sent by promise to indwell me, to fill me with your love, to comfort me, to guide and lead me into all truth starting when I first believed.
- Please accept back, with the greatest apology, the new new birth and the incorruptible seed of the word that saved me.
- Please acknowledge my return back to you or your redemption, your reconciliation, your regeneration and the other (65) things that was imputed to my account when I first believed.
- I also realize that my adoption into sonship and my priesthood is no longer valid when I give back to you and sell out my birthright.
- I realize that my inheritance will be forfeited and any rewards that I might have received at the judgment seat of Christ.
- I realize that after writing my name in the Lamb's book of life that You will have to blot it out when I make this forfeiture of all that you gave to me by grace through faith through your Son.
- I now will have to live by my own righteousness in hopes that you will consider it acceptable in your sight, but I have no confidence that such an acceptance could ever take place.
- You had always promised that you would never leave me or forsake me and you kept your word, but I have failed to do the same for you. I guess I do not have or possess the same character, nature or attributes as you possess as the only true wise God.
- Finally, I pray that you will never restore to me your great and perfect salvation because I would only again fail to maintain it and would only turn the grace of your salvation into some form of lasciviousness or licentiousness, doing despite to the Spirit of grace and disgrace You in the process, because of your perfect holiness and perfection that I would never be able to attain to in this life or the next life to come. I would ask you to please forgive me of what I am about to do, but to some that is the unpardonable sin that I could never be forgiven for. Perhaps Lord, it would have been better that I was never born.