Once saved always saved!? Can a Christian LOSE their salvation

Once saved always saved!? Can a Christian LOSE their salvation
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Can a Christian lose their salvation and become not saved anymore!? This is a popular belief taught called "once saved always saved". Is once saved always saved false doctrine or Biblical? We are going to break this concept down in depth using the Bible so it's not my word against others but what does God say about this? Can you lose your salvation ever?? What is eternal security? Let's find out.
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Video used in the Bible teaching:
20230207 IS ONCE SAVED ALWAYS SAVED BIBLICAL?
https://rumble.com/v28qw0q-20230207-is-once-saved-always-saved-biblical.html
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Source: https://www.youtube.com/watch?v=YhURiKCBJwQ
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