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Again, there is no such thing as in the scriptures as “continue to believe” Your “continue to believe” is to be found nowhere in the scriptures
"1Now I make known to you, brethren, the gospel which I preached to you, which also you received, in which also you stand, 2by which also you are saved, if you hold fast the word which I preached to you, unless you believed in vain (that is, if Christ has not really been raised from the dead-see vs.14, 17). "-1 Corinthians 15:1-2
24 "As for you, let that abide in you which you heard from the beginning. If what you heard from the beginning abides in you, you also will abide in the Son and in the Father."-1 John 2:24 (why's he telling this to people who only won't continue in Christ if they never really belonged to him?)
6 "...Christ was faithful as a Son over His house—whose house we are, if we hold fast our confidence and the boast of our hope firm until the end."-Hebrews 3:6 (think about the 'shelter' analogy I gave)
14 "For we have become partakers of Christ, if we hold fast the beginning of our assurance firm until the end"-Hebrews 3:14
20 "...you stand by your faith. Do not be conceited, but fear; 21for if God did not spare the natural branches, He will not spare you, either.22Behold then the kindness and severity of God; to those who fell, severity, but to you, God’s kindness, if you continue in His kindness; otherwise you also will be cut off."-Romans 11:20-22 (Remember, if you're traditional 'once saved always saved' you say real believers don't ever fall away-but Paul says they 'stand by faith'. That means they are saved, yet he's warning them to continue in faith or be cutoff.)
...and has nothing to do to get salvation.
I have more to say about all this but I have to go to work. We can talk in more depth as you respond to what I do post.