Can a Christian lose their Salvation?

Firstly I've to say nobody who don't want to get lost will lose his hail, because not even Satan themself is able to to wrench believers out of Gods hand (John 10:28-29), nevertheless it's also important to mention God wouldn't to force the salvation anyone.

It's possible for Christians to apostatize and to step out of the hail with their "free will", without a chance to get it back in this limited life or the eternity after this (Hebrews 6:4-6), what shows passages of the bible which to warn believers to lose their hail (Hebrews 10:26-27) or where the loss of Hail was prophesied (1. Timothy 4:1) and passages, which to guarantee the Hail (Romans 8:33-39) don't to preclude each other.

EXAMPLE:When War has begun and a human found a protective pillbox timely, which is able to protect him, no matter what will come, but this human decide with his free will to go out of this pillbox before this War ends, then not this pillbox was the problem, it has not failed!The problem was the human and his decision, the fatal consequences and so on, what means it's the humans fault what comes next, because he left the protective pillbox freely. (for example, the enemy deceived him successfully, so he thought the pillbox was unnecessary and the War was over, although he wasn't).

CONCLUSION:Satan is NOT able to wrench anything out of Gods hand, but he tries through manipulation and deception to influence humans, because they've to leave God with their free will in his opinion.That is why the devil just have as much power about humans as they to bestow him, although it's important they don't understand this satanic strategy (when they understand it, this strategy is ineffective and believers "know" what's to do).The father of lies is to depend on the humans freely rejection of Jesus Christ, during he wants to to come of as somebody who has the Power to wrench humans out of Gods hand!That's the way like evil works, with manipulation, delusions and entanglements, because he's just able to get what he wants to have on detours (for example:A human soul), during he wouldn't have any chance by a directly confrontation with the Lord!

We see one of the biggest misconceptions is, when terms like "apostasy" let some humans think Satan is able to wrench humans out of Gods hand and to be successfull by this, what's one reason because the principle of "free will" is not considered at this moment.Is this misconception resolved (Satan can NOT wrench humans out of Gods hand, but humans are able to rejected God with tjeir free will, when Satan is successfull by deceive them), then it's clearly, why passages, which guarantee the hail, warnings about the loss of the hail and prophecies about the loss of the hailt don't to cut across each other (Romans 8:33-39, Hebrews 6:4-6, 10:26-27, 1. Timothy 4:1 and 2. Thessalonians 2:3), although it seemed so at the beginning.