The scriptures teach that a child of God can't fall (eternal security or "once saved always saved")

Sorry, if I missed your point but if you look clearly at I John 5:16 it is clearly it does not speak of a physical death wherein the soul and spirit leave the body. Further my opponent attempts to establish that when one is saved, He is saved “for all time” and so can never lose his salvation. His proof texts are from Heb. 10. There the Holy writer stated that Christ “offered one sacrifice for sins forever.” He “hath perfected forever them that are sanctified” (12: 14). Again, though, our friend has missed the point. First of all, it is apparent that the subjects are not saved beyond the possibility of apostasy as evidenced by the fact that they are in the process of being “sanctified” (a present tense participle vs. 14); their personal sanctification was not completely accomplished at Calvary. Second, the perfect tense form “hath perfected” (which pictures an event in the past with abiding results) merely denotes the fact that the sacrifice of Jesus on the cross will never have to be repeated; it will be forever efficacious (see 11-13). There is no support in these passages for the notion of “eternal security.” Further my opponent uses John 10:27-28 as an attempt to defend his position. He thinks this is one of the clearest statements of security in the Bible. Does it support his doctrine on this point? First, there is no doubt that security, from the Savior’s vantagepoint, is offered. The question is not whether someone could “snatch” us away; the issue is does a child of God possess personal volition so that he can walk away from the Lord if he chooses to do so? Second, we must once more call attention to the fact that the Master’s promise in this context is qualified. Jesus said: “My sheep hear [akouousin – present tense, keep listening to] my voice, and I know [ginosko – present tense, keep on knowing] them, and they follow [akolouthousin – present tense, continue to follow] me; and I give [didomi – present tense, am in the process of giving] unto them eternal life …” Their salvation was not a “done deal.” As long as the sheep keep listening keep listening to the Shepherd, and as long as they continue to follow Him, they will not perish. Without question, though, if they stop listening and cease following him, they will perish. Note this verse: if a man keep my word, he shall never see death” (John 8:51). The security is conditional. The term “if” is a conditional participle. It introduces a contingency.My opponent's greatest proof text and greatest misinterpretation:Jude 1:24 “Now to Him who is able to keep you from stumbling,and to make you stand in the presence of His glory blameless with great joy, to the only God our Savior, through Jesus Christ our Lord,be glory, majesty, dominion and authority, before all time and now and forever. Amen” (Jude 24-25, NASB) According to Jude 24, God is able to do two things: (1) to keep every believer from stumbling (from experiencing major moral or doctrinal failure); and (2) to make us stand “blameless with great joy” in the presence of His glory. An important interpretive question is whether Jude was teaching an unconditional guarantee God will keep believers from stumbling and stand blameless in the presence of His glory, or was referring to a conditional guarantee requiring a certain response by individual believers. In other words, if God is able to do something, does this necessarily mean that He will do it? [NB to Greek students: Jude 24 is an instance in which an adjectival participle isfunctioning as the controlling verb. Gal. 3:21 is similar: “for if a law had beengiven that could make alive” (eij ga;r ejdovqh novmo" oJ d u navme n o" zw/opoih'sai;see Wallace, Greek Grammar Beyond the Basics, p. 599]. But how can anyone propose such an unconditional guarantee when one thinks ofsaints like David, Solomon, Peter, John Mark, and Demas? All of these believersstumbled badly. In these instances, was God unable to keep these believers fromstumbling, or is the unconditional guarantee proposed by biblical interprets found at fault?If the latter, then Jude 24 calls for, but does not guarantee perseverance, and thus weshould not confuse this passage with eternal security which is promised elsewhere inScripture (Jn. 3:16; 5:24; 6:29, 40; Acts 16:31; 1 Jn. 5:12-13). God is able to perform anything He wishes to do, as long as it aligns with His absolute holiness. For example, God is unable to lie, because this contradicts His personalcharacter. But there are numerous events which have happened which God could havestopped from occurring. One only needs to think of the fall of man and the woman in theGarden of Eden. God could have created them without an ability to sin; yet He chose notto do so. He could have kept the serpent from tempting them, but He did not.There are many places in the New Testament where the same expression “God isable” is employed and where the possible result either never occurred, or where it onlyoccurred when a condition was met. Consider the following examples: 1. “And do not suppose that you can say to yourselves, ‘We have Abraham forour father’; for I say to you, that God is able from these stones to raise upchildren to Abraham” (Matt. 3:9, NASB).2. “For since He Himself was tempted in that which He has suffered, He is ableto come to the aid of those who are tempted” (Heb. 2:18, NASB). Yet, thisaid is conditioned upon the one being tested looking to Him in prayer withfaith (Heb. 3:12—15; 4:11-16).3. “And after He had come into the house, the blind men came up to Him, andJesus said to them, ‘Do you believe that I am able to do this?’ They said toHim, ‘Yes, Lord’” (Matt. 9:28, NASB). Jesus conditioned His healing of thesetwo blind men based on their answer.The fact that God is able to do something does not unconditionally guarantee that He willdo it. It may be something He never intends to do, or which He will only do for thosewho respond as He commands, as in the case of Jude 24. The context of Jude 24 makes it clear that Jude is encouraging believers to look to the One who can keep them from being deceived by false teachers:“But you, beloved, building yourselves up on your most holy faith; praying in theHoly Spirit; keep yourselves in the love of God, waiting anxiously for the mercy ofour Lord Jesus Christ to eternal life [lit., ‘life to the age’]. And have mercy onsome, who are doubting; save others, snatching them out of the fire; and on somehave mercy with fear, hating even the garment polluted by the flesh” (Jude 20-23,NASB). To suggest that Jude in verse 24 unconditionally guarantees his readers would not bedeceived by false teachers, misinterprets the entire purpose of the letter. It was Jude’sconcern his readers would be deceived by the false teachers which prompted him to writethis brief letter in the first place (cf. vv. 3-4). In fact, Jude gives seven commands tobelievers as guidance so that they would not be deceived:· Earnestly contend (lit. “agonize”) for the faith (v. 3)· Remember the teaching and warning of the apostles (v. 17)· Build yourselves up in the most holy faith (v. 20)· Pray in the Holy Spirit (v. 21)· Keep yourselves in the love of God (v. 21)· Wait anxiously for the mercy of our Lord Jesus (v. 21)· Show mercy to those doubting (vv. 22-23)Now to say that one can disobey these directives and yet, at the same time be kept fromstumbling into doctrinal and moral error, is to believe God will act contrary to His Word.There is no doubt that a believer may experience victory over doctrinal and moralcorruption, because God is ready, willing, and able to sustain us through the tests we face(1 Cor. 10:13). The question is not whether He is able to keep us from stumbling, rather,will we continue to look to Him in faith and be obedient to His Word. Since Jude 24 supports his overall argument i will stop here and due to the 8000 character limit i can't continue. I hope we're going to have a part two of this.