The Bible says, "No!" One who is saved "has everlasting life, and ... is passed from death unto life" (John 5:24). Eternal life by definition cannot be temporary. It is the present possession of all those who have truly trusted Christ.
Romans 8:28-39 reveals clearly that there is nothing in the universe that can separate the elect from the love of God. The One who chose to save you "is able to keep you from stumbling, and to make you stand in the presence of His glory blameless with great joy" (Jude 24).
According to Scripture, people who profess to know Christ at one time but later deny Him were never really saved to begin with. First John 2:19 says, "They went out from us, but they were not really of us; for if they had been of us, they would have remained with us; but they went out, in order that it might be shown that they all are not of us."
A true believer will never depart from the faith (Philippians 1:6), so those who do so are revealing that they were never truly saved (John 8:31; Hebrews 3:14).
Even true Christians can sin, however, and because of that may lack assurance of salvation (Psalm 51:12). A failure to grow spiritually can also rob us of the confidence that we are God's children (2 Peter 1:9). But anyone indwelt by the Holy Spirit is secure eternally, because He is the "deposit guaranteeing our inheritance" (Ephesians 1:14).
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