Hey! 2 The 2:2 doesn't talk about losing or not salvation. I think you are referring Hebrew 6:4, the main text of the post. And 1 Tim 4:1 is talking about people that were among Christians that were not believers, that is confirmed in 1 John 19 - "They were among us, but they were not of us, for if they had been of us: they would no doubt have continued with us: but they went out, that they might be made manifest that they were not all of us"