1 John 2: 18 Little children, it is the last hour; and as you have heard that the Antichrist is coming, even now many antichrists have come, by which we know that it is the last hour. 19 They went out from us, but they were not of us; for if they had been of us, they would have continued with us; but they went out that they might be made manifest, that none of them were of us.
20 But you have an anointing from the Holy One, and you know all things. 21 I have not written to you because you do not know the truth, but because you know it, and that no lie is of the truth.
22 Who is a liar but he who denies that Jesus is the Christ? He is antichrist who denies the Father and the Son. 23 Whoever denies the Son does not have the Father either; he who acknowledges the Son has the Father also.
Here is what the bible says about those who supposedly "lost faith" They now are against Christ and deny Christ, thus they are deemed antichrist. There are some who come to our churches and claim to have faith. And then later depart. having now lost faith. I have seen this happen quite a few times
John did not say they lost salvation, He says they were never of us,, ie, they never HAD salvation to begin with.
God promised us in John 6 a; those things I spoke of above, If we can die, Jesus lied. If we can return to hunger and thirst. Jesus lied. If we do not live forever. Jesus lied. If we are not raised on the last day, but are instead delivered to him for judgment, Jesus lied.
that seems to be the cruxt of the issue and why followers of calvin and arminius fight so hard. one pushes free will, and one denies free will. and take it to extremes.
when reality is some place in the middle