Can a Christian lose salvation?

Interesting. Your interpretation is right if salvation is by works...if YOU hold fast. If it is by grace, YOU holding fast is evidence of the work of God that cannot fail.
Works depends on us keeping ourselves. Grace depends on God keeping us.

The Bible tells us, we are saved by[.b] God and his grace through faith.

The natural mind cannot understand the things of the spirit. Those are foolishness to him because those are spiritually discerned.

We cannot choose to come to faith for that very reason.

We are saved by God and his grace through faith.
Jesus tells us, no one comes to the Father but through me.

W are not saved of ourselves so we cannot boast at our salvation because God saved us through faith.

Our natural minds could not accept, understand, things of the spirit because those things are foolishness to us.

Think of sarcastic unbelievers as that example.

Only through intercession by the Holy Spirit, God, are we able to understand the things of God.

Jesus, Immanuel ,''God with us'', was the embodiment of God's grace and faith gift.

Saved by God’s grace through your faith not by [good] works, i.e., the good things you do don’t make you saved. God’s grace is not from ourselves, but faith is. Throughout scripture, we are told to have faith and keep our faith.

Ephesians 2
8For it is by grace you have been saved, through faith—and this is not from yourselves, it is the gift of God— 9not by works, so that no one can boast. 10For we are God’s handiwork, created in Christ Jesus to do good works, which God prepared in advance for us to do.

I never said works save. Just the opposite in fact.

I have eternal life right now. I'm not immortal in flesh, just as Jesus taught and examples, I'm an immortal soul right now.

Why should anyone trust an athe
True.

1. Moreover, brethren, I declare unto you the gospel which I preached unto you, which also ye have received, and wherein ye stand;
2. 2 By which also ye are saved, if ye keep in memory what I preached unto you, unless ye have believed in vain.
3. 3 For I delivered unto you first of all that which I also received, how that Christ died for our sins according to the scriptures;
4. 4 And that he was buried, and that he rose again the third day according to the scriptures.

The subject is the gospel that he reminds them of. Verse 3 is the "for" clause which can also be understood "because...." then explained on what basis they are saved...."unless ye have believed in vain.".
What is believing in vain? Believing in that which cannot save, anything besides the gospel of Jesus Christ.

Since he addressed the most carnal church in any of the epistles, he never told them that they were going to hell for their disobedience. He warns of discipline, even to the point of physical death as a possibility, but never hell. He declares the gospel as the basis of their salvation rather than obedience to the law as restated in the book of Galatians.

yes and no

Which verse says the soul is immortal?

I agree up until a point, but the subject being the true gospel is what needs to be firmly held to, otherwise belief was in vain. Paul is referring to apostasy from the true gospel resulting in a loss of salvation.

He is making an argument for the resurrection of Christ and of believers up until verse 18 and thereafter. In verse 12 he is addressing those who apostatized or were in the assembly as unbelievers, but I see nowhere where they lost their salvation.

I Corinthians 15

Belief in the gospel is a prerequisite to salvation. Holding firmly to that belief is what Paul said is required. If belief in the gospel is not held to firmly then it’s a vain, useless, belief. Losing a firm grip on this belief in the gospel means the belief in the gospel has been lost and, therefore, the belief Paul said is required to be saved is no longer present in that individual. That is a loss of salvation.

Who is responsible for maintaining the belief?

Is God immortal?

Ecclesiastes 3:11

I John 5:11-13

"And this is the record, that God hath given to us eternal life, and this life is in his Son.12 He that hath the Son hath life; and he that hath not the Son of God hath not life.13 These things have I written unto you that believe on the name of the Son of God; that ye may know that ye have eternal life, and that ye may believe on the name of the Son of God."

That eternal life was the gift given at the minute the person decided to believe on the Son of God. I wish more would realize that He gave us that life, as recorded, and it's everlasting, not probationary or based on conditions of will power, obedience or faith like Elijah.
It was given, past tense.
It lasts forever.

Matthew 24:45- 51

“Who then is a faithful and wise servant, whom his master made ruler over his household, to give them food [i]in due season? 46 Blessed is that servant whom his master, when he comes, will find so doing. 47 Assuredly, I say to you that he will make him ruler over all his goods. 48 But if that evil servant says in his heart, ‘My master is delaying [j]his coming,’ 49 and begins to beat his fellow servants, and to eat and drink with the drunkards, 50 the master of that servant will come on a day when he is not looking for him and at an hour that he is not aware of, 51 and will cut him in two and appoint him his portion with the hypocrites. There shall be weeping and gnashing of teeth.



so yes one can loose salvation

Footnotes

luke 12:35-41

"
“Let your waist be girded and your lamps burning; 36 and you yourselves be like men who wait for their master, when he will return from the wedding, that when he comes and knocks they may open to him immediately. 37 Blessed are those servants whom the master, when he comes, will find watching. Assuredly, I say to you that he will gird himself and have them sit down to eat, and will come and serve them. 38 And if he should come in the second watch, or come in the third watch, and find them so, blessed are those servants. 39 But know this, that if the master of the house had known what hour the thief would come, he would [g]have watched and not allowed his house to be broken into. 40 Therefore you also be ready, for the Son of Man is coming at an hour you do not expect.”

41 Then Peter said to Him, “Lord, do You speak this parable only to us, or to all people?”

42 And the Lord said, “Who then is that faithful and wise steward, whom his master will make ruler over his household, to give them their portion of food [h]in due season? 43 Blessed is that servant whom his master will find so doing when he comes. 44 Truly, I say to you that he will make him ruler over all that he has. 45 But if that servant says in his heart, ‘My master is delaying his coming,’ and begins to beat the male and female servants, and to eat and drink and be drunk, 46 the master of that servant will come on a day when he is not looking for him, and at an hour when he is not aware, and will cut him in two and appoint him his portion with the unbelievers"



so an unfaithful christian will be given a portion with the unbelievers....lets not get comfortable

Yes.

I don’t think that says the soul is immortal. I think it’s basically saying that in peoples’ thoughts and feelings they desire eternity. So there really isn’t a verse that plainly says the human soul is immortal apart from God giving the gift of immortality.

So immortality is conditional based on the gospel.

2 Timothy 1
10but it has now been revealed through the appearing of our Savior, Christ Jesus, who has destroyed death and has brought life and immortality to light through the gospel.

According to scripture, you are. See the Parable of the shower, 1 Corinthians 15, Hebrews 3, 2 Peter 2:21, etc.