I give them eternal life, and they will never perish, and no one will snatch them out of my hand.
And I am sure of this, that he who began a good work in you will bring it to completion at the day of Jesus Christ.
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 it might become plain that they all are not of us.
For the gifts and the calling of God are irrevocable.
Who by God's power are being guarded through faith for a salvation ready to be revealed in the last time.
My sheep hear my voice, and I know them, and they follow me. I give them eternal life, and they will never perish, and no one will snatch them out of my hand. My Father, who has given them to me, is greater than all, and no one is able to snatch them out of the Father's hand.
Which is why I suffer as I do. But I am not ashamed, for I know whom I have believed, and I am convinced that he is able to guard until that day what has been entrusted to me.
No one born of God makes a practice of sinning, for God's seed abides in him; and he cannot keep on sinning, because he has been born of God.
And do not grieve the Holy Spirit of God, by whom you were sealed for the day of redemption.
Now to him who is able to keep you from stumbling and to present you blameless before the presence of his glory with great joy,
Now may the God of peace himself sanctify you completely, and may your whole spirit and soul and body be kept blameless at the coming of our Lord Jesus Christ. He who calls you is faithful; he will surely do it.
For I am sure that neither death nor life, nor angels nor rulers, nor things present nor things to come, nor powers, nor height nor depth, nor anything else in all creation, will be able to separate us from the love of God in Christ Jesus our Lord.
The Lord will rescue me from every evil deed and bring me safely into his heavenly kingdom. To him be the glory forever and ever. Amen.
In him you also, when you heard the word of truth, the gospel of your salvation, and believed in him, were sealed with the promised Holy Spirit, who is the guarantee of our inheritance until we acquire possession of it, to the praise of his glory.
There is therefore now no condemnation for those who are in Christ Jesus. For the law of the Spirit of life has set you free in Christ Jesus from the law of sin and death. For God has done what the law, weakened by the flesh, could not do. By sending his own Son in the likeness of sinful flesh and for sin, he condemned sin in the flesh, in order that the righteous requirement of the law might be fulfilled in us, who walk not according to the flesh but according to the Spirit. For those who live according to the flesh set their minds on the things of the flesh, but those who live according to the Spirit set their minds on the things of the Spirit. ...
Even as he chose us in him before the foundation of the world, that we should be holy and blameless before him. In love
Truly, truly, I say to you, whoever hears my word and believes him who sent me has eternal life. He does not come into judgment, but has passed from death to life.
Since you have been born again, not of perishable seed but of imperishable, through the living and abiding word of God;
Who will sustain you to the end, guiltless in the day of our Lord Jesus Christ.
Ephesians 1:13
In him you also, when you heard the word of truth, the gospel of your salvation, and believed in him, were sealed with the promised Holy Spirit,
Blessed be the God and Father of our Lord Jesus Christ! According to his great mercy, he has caused us to be born again to a living hope through the resurrection of Jesus Christ from the dead, to an inheritance that is imperishable, undefiled, and unfading, kept in heaven for you, who by God's power are being guarded through faith for a salvation ready to be revealed in the last time.
He saved us, not because of works done by us in righteousness, but according to his own mercy, by the washing of regeneration and renewal of the Holy Spirit,
He predestined us for adoption to himself as sons through Jesus Christ, according to the purpose of his will,
I write these things to you who believe in the name of the Son of God, that you may know that you have eternal life.
An important rule of hermeneutics (the study of how to interpret the Bible), is that God does not contradict Himself. For example, God doesn't say salvation is by faith alone in one place then say salvation depends on works in another. That would be a contradictory statement. God is not of two minds nor does He get mixed up and contradict Himself. When we come across such apparent contradictions, we let the plain passages speak and we look for a way to harmonize the passages.
Paul plainly states that salvation is by faith alone and not by works. That should inform us on how to understand what Jame's writes. Likewise, if we have passages saying you cannot lose your salvation, then that must inform us on passages that seem to suggest you can.
I believe in both cases we find that some passages are speaking directly to Christians while others are speaking to those who believe they are Christians but are not (the wheat verses the tares). Saving faith is an inward act that bears outward actions. We don't start glowing or have a hallo appear about our heads when we believe. The best outward test of our claim of faith is our actions. These actions don't earn us salvation but they give evidence to it.