Oh I get it, its one of those - lets see who can produce the most scripture to back up our argument dialogues huh?
Jesus' Teaching on Losing Salvation
Matt. 7:18 - Jesus says that sound trees bear good fruit. But there is no guarantee that a sound tree will stay sound. It could go rotten.
Matt. 7:21 - all those who say "Lord, Lord" on the last day will not be saved. They are judged by their evil deeds.
Matt. 12:30-32 - Jesus says that he who is not with Him is against him, therefore (the Greek for "therefore" is "dia toutos" which means "through this") blasphemy against the Spirit will not be forgiven. This means that failing to persevere in Jesus' grace to the end is the unforgivable sin against the Spirit. We must persevere in faith to the end of our lives.
Matt. 22:14 - Jesus says many are called but few are chosen. This man, who was destined to grace, was at God's banquet, but was cast out.
Luke 8:13 - Jesus teaches that some people receive the word with joy, but they have no root, believe for a while, and then fall away in temptation. They had the faith but they lost it.
Luke 12:42-46 - we can start out as a faithful and wise steward, then fall away and be assigned to a place with the unfaithful.
Luke 15:11-32 - we can be genuine sons of the Father, then leave home and die, then return and be described as "alive again."
John 6:70-71 - Jesus chose or elected twelve, yet one of them, Judas, fell. Not all those predestined to grace persevere to the end.
John 15:1-10 - we can be in Jesus (a branch on the vine), and then if we don't bear fruit, are cut off, wither up and die.
John 17:12 - we can be given to Jesus by the Father (predestined to grace) and yet not stay with Jesus, like Judas.
John 6:37 - those who continue to come to Jesus He won't cast out. But it's a continuous, ongoing action. We can leave Jesus and He will allow this because He respects our freewill.
John 6:39 - Jesus will not lose those the Father gives Him, but we can fall away, like Judas. God allows us not to persevere.
John 6:40 - everyone who sees the Son and believes means the person "continues" to believe. By continuing to believe, the person will persevere will be raised up.
John 6:44 - Jesus says no one can come to me unless the Father "draws" him. This "drawing" is an ongoing process.
John 10:27-28 - when Jesus says, "no one shall snatch them out of my hands," He does not mean we can't leave His hands. We can choose to walk away from Him.
Rev. 3:4 - in Sardis, Jesus explained that many people received the white garment and soiled it with sin.
Rev. 3:5 - Jesus says whoever conquers will not be blotted out of the book of life (see Exodus 32:33). This means that we can be blotted out.
Rev. 3:11 - Jesus says to hold fast to what we have, so that no one may seize our crown. Jesus teaches us that we can have the crown and lose it.
Rev. 13:10; 14:12 - we are called from heaven for the endurance and faith of the saints, keeping the commandments and faith.
Rev. 21: 7 -we must conquer in order to share in our heritage and become a true son of Jesus.
Rev. 22:19 - we can have a share in the tree of life in God's holy city and yet have that share taken away from us.
http://www.scripturecatholic.com/salvation.html#salvation-IV
Other Apostolic Teaching on Losing Salvation by our Own Choice
Acts 7:51 - you stiff-necked people, you always resist the Holy Spirit. We, by our own freewill, can resist God and His grace.
Rom. 11:20-22 - we can be in the tree of God's grace by faith in the Messiah, then quit believing and persevering and be cut off.
1 Cor. 9:22,27 - even Saint Paul recognized that he could lose his salvation by choosing wrong. Not every runner receives a prize. If Paul thought that he could lose his salvation, why are many Protestant churches so presumptuous to think that they cannot lose theirs?
1 Cor. 9:27 - the word "disqualified" that Paul uses comes from the Greek word "adokimos" which literally means cut off from Christ, or reprobate. This proves that Paul believes he can lose his salvation. Protestants, therefore, who believe in "once saved, always saved" have to argue that "disqualified" cannot refer to being cut off from Christ and salvation. Instead, they argue that "disqualified" only refers to receiving less rewards in heaven. But Scripture disproves their claim:
Rom. 1:28; Titus 1:16; 2 Tim. 3:8; Heb. 6:8; 2 Cor. 13:5-7 - for example, in these verses "adokimos" always refers to those reprobates who are to be condemned by God. It has nothing to do with going to heaven with less rewards.
1 Cor. 4:4 - Paul says he is not aware of anything against himself, but he is still not acquitted. Paul is not presumptuous about his salvation. Only the Lord is our Judge.
1 Cor. 6:9-11 - we can be washed, sanctified, and justified, yet Paul still warns us that we can be deceived and become unrighteous.
1 Cor. 10:12 - anyone who thinks he stands take heed lest he fall. You can be standing in God's grace, and then fall away.
1 Cor. 15:1-2 - we can be believers (predestined to grace) but believe in vain. Scripture refutes the novel Protestant theory "once saved, always saved."
2 Cor. 6:1 - we can receive the grace of God (predestined to grace) in vain. We can choose not to cooperate with His grace.
2 Cor. 11:2-3 - I betrothed you to Christ, but I am afraid that your thoughts will be led astray from a devotion to Christ. Paul thus teaches that we can be in Christ, and still fall away from Christ. Once saved, always saved?
Gal. 5:4 - Paul teaches that we can be in Christ, then be severed from Him and fall away from God's grace.
Phil. 2:12 - we cannot assume salvation. We need to work it out to the end with fear and trembling. If "once saved, always saved" were true, why would the great apostle Paul have to work his salvation out in fear and trembling?
Phil. 3:11-12 - again, Saint Paul acknowledges need to endure to the end and has no presumption of salvation.
Col. 1:21-23 - we have now been reconciled in His body to be presented holy and blameless, provided we are steadfast.
Col. 2:18-19 - a man puffed up without reason by his sensuous mind has lost the connection with Jesus. He had the connection and lost it.
1 Tim. 1:5-6 - some people have wandered away from a sincere faith, a pure heart and a good conscience. They had a sincere (not a fake) faith, and still fell away.
1 Tim. 1:19-20 - Paul tells Timothy to hold fast to the faith, and not shipwreck it like Alexander and Hymenaeus. They had it, and then they lost it.
1 Tim. 4:1 - the Spirit "expressly says that in later times some will depart from the faith." They had the faith, then lost it.
1 Tim. 5:8 - if we do not provide for our relatives, we have disowned the faith (we had the faith, and we lost it).
1 Tim. 6:10 - for the love of riches we may wander from the faith (we had the faith, and we can lose the faith).
2 Tim. 4:8 - it is only at end of St. Paul's life that he has a moral certitude of salvation. But this is after a lifetime of perseverance. As faithful believers in Christ, we must have a moral certitude of salvation, but this is different from being certain of our salvation. We can choose to fall away.
Heb. 2:1 - we must pay closer attention to what we have heard, lest we drift away from it. We have it, but we can drift away from it.
Heb. 3:12 - take care, lest there be in any one of you an evil heart, leading you to fall away from the living God. We can be with God, and choose to fall away from Him.
Heb. 4:1 - while the promise of entering his rest remains, let us fear lest any of you be judged to have failed to reach it.
Heb. 4:6 - we can receive the good news (predestined to grace) and then disobey it and fall away.
Heb. 6:4-6 - those who have been enlightened (predestined to grace) can fall away, commit apostasy and crucify the Son of God.
Heb. 10:23-29 - we can sin deliberately after receiving knowledge of the truth (predestined to grace) and then face a fury of fire.
Heb. 10:26 - if we continue to sin after knowing truth, there no longer remains a sacrifice for sin - our salvation is jeopardized.
Heb. 10:35 - we can have confidence in salvation (predestined to grace), and then throw it away. We can have it, and lose it.
James 5:19-20 - we can be in the truth, and then wander from the truth which means death, unless we are brought back.
2 Peter 2:1 - we can be bought by Christ, and then become false teachers of destructive heresies and destroy ourselves.
2 Peter 1:10 - we are all called to God, but we must "work" hard to keep our calling. By grace we participate in our salvation.
2 Peter 2:20-22 - we can escape the defilements of the world through Jesus (destined to grace) and then become entangled again therein.
2 Peter 3:16-17 - we can be the beloved of God and then lose our stability and carried away with the error of lawless men.
1 John 1:7 - if we walk in the light, the blood of Jesus cleanses us. But we need continual cleansing, and can walk out of the light.
1 John 1:9 - if we confess our sins, Jesus will forgive them and cleanse us. But we need continual cleansing. Growing in holiness is a lifelong process.
1 John 2:19 - "they left, but didn't not belong to us" refers to those who were Christians who did not persevere and were thus not predestined to glory.
1 John 2:28 - we must abide in Him so we have confidence and don't shrink in shame. If we fail to abide, we are lost.
2 John 8 - look to yourselves, that you may not lose what you have worked for. You can lose the grace you currently have.
Jude 6 - even some of the angels, who beheld the face of God, fell. How much more could we fall?
Gen. 3:6 - Adam and Eve, who were already living the divine life of supernatural grace, fell away from God. Is falling more possible for us?
Ezek. 3:20; 18:24 - the righteous can turn away from their righteousness, and their prior good deeds will be forgotten.
, only some ideas that might bring us together into a understanding. It this one of those topics that we should maybe just put on the back burner for some future time?
makes me 
goes to the repentant . . . 
