Vanderhoven,
"We are saved
a. in Jesus alone
b. by grace alone
c. through faith alone
d. in His blood alone
6. there is but one hope of the Christian calling and that is reserved in heaven for every believer."
I would add a few things here:
"that if you confess with your mouth Jesus as Lord, and believe in your heart that God raised Him from the dead, you will be saved; for with the heart a person believes, resulting in righteousness, and with the mouth he confesses, resulting in salvation."
Romans 10:9-10 NASB2020
In the same way, faith also, if it has no works, is dead, being by itself. But someone may well say, “You have faith and I have works; show me your faith without the works, and I will show you my faith by my works.” ; You believe that God is one. You do well, the demons also believe, and shudder. But are you willing to acknowledge, you foolish person, that faith without works is useless? Was our father Abraham not justified by works when he offered up his son Isaac on the altar? You see that faith was working with his works, and as a result of the works, faith was perfected; You see that a person is justified by works and not by faith alone. For just as the body without the spirit is dead, so also faith without works is dead.
James 2:17-22, 24, 26 NASB2020
What shall we say then? That Gentiles, who did not pursue righteousness, attained righteousness, but the righteousness that is by faith; however, Israel, pursuing a law of righteousness, did not arrive at that law. Why? Because they did not pursue it by faith, but as though they could by works. They stumbled over the stumbling stone, just as it is written: “Behold, I am laying in Zion a stone of stumbling and a rock of offense, And the one who believes in Him will not be put to shame.”
Romans 9:30-33 NASB2020
Even though we are saved by the four points you mentioned above, we also need to prove our faith through our works as well as witnessing to others. It has to come from within and doesn't have to be accounted for in front of other people, only before God.
And also we need knowledge in order to believe. And someone needs to pass on that knowledge.
for “Everyone who calls on the name of the Lord will be saved.” How then are they to call on Him in whom they have not believed? How are they to believe in Him whom they have not heard? And how are they to hear without a preacher? But how are they to preach unless they are sent? Just as it is written: “How beautiful are the feet of those who bring good news of good things!” However, they did not all heed the good news; for Isaiah says, “Lord, who has believed our report?” So faith comes from hearing, and hearing by the word of Christ. But I say, surely they have never heard, have they? On the contrary: “Their voice has gone out into all the earth, And their words to the ends of the world.”
Romans 10:13-18 NASB2020
I remember reading this somewhere: If people love something they will tend to praise what they love, and then they will want to share it with others in order to feel fulfilled.