As the saying goes, we don't work to get saved, we are saved to do works. Good works, done after you permanently have eternal life, gain rewards and with bad works or no good works, you will suffer loss. You are Gentiles. Paul is your ONLY apostle. He was chosen and sent by Jesus Christ for this position and was trained by Jesus Christ, though the many special revelations he received from Christ. For Gentiles, Paul's word is the last word. Paul's words are Jesus Christ's words. These 2 passages are all you need, Believe them totally and you have eternal life. Period!
1Cor 15:1-4
1 Moreover, brethren, I declare unto you the gospel which I preached unto you, which also ye have received, and wherein ye stand;
2 By which also ye are saved, if ye keep in memory what I preached unto you, unless ye have believed in vain.
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 And that he was buried, and that he rose again the third day according to the scriptures:
Eph 2:8_9
8 For by grace are ye saved through faith; and that not of yourselves: it is the gift of God:
9 Not of works, lest any man should boast.
When you fully believe, you are sealed with the Holy Spirit that will now be in you. This guarantees your salvation. When you die, the Spirit will return to God who gave it, Eccl 12:7. You will not immediately go to Heaven when you die, only Christ has ever ascended to Heaven, Jn 3:13. You will eventually be resurrected and will go the Heaven if you are chosen. If not, you will likely be on the New Earth, paradise. When God becomes All in All, anyplace in His Universe will be indescribably Wonderful. Unbelievers do not have the Spirit of God within them and, therefore, no spirit will return to God when they die. They will simply die permanently. No unbeliever will ever be resurrected. No unbeliever will ever have a second chance. The ungodly (unbelievers) will not stand in the judgments, Ps 1:5. They are already judged.
Eph 1:12-13
12 That we should be to the praise of his glory, who first trusted in Christ.
13 In whom ye also trusted, after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that holy Spirit of promise,
There are many people that will tell you that you must do certain things, besides believe, to get saved. What they are actually saying is that Christ's sacrifice on the cross was NOT SUFFICIENT to save you, which, of course, is heresy. You are, however, expected to do good works after you are saved, and you will ultimately be rewarded for these or, if you don't do them, you will suffer loss. For your walk, read the last 3 chapters of Ephesians. All works BEFORE salvation are 100% worthless in the eyes of God. He won't even look at them.
Water Baptism is based on the all-Israel OT and was only for Jews, proselytes, and the Gentiles in the Acts Church, who were part of Israel, since they were grafted into Israel. Anything and everything required of today's Gentiles, none of whom has ANY association with Israel, whatsoever, is found only in Paul's 7 post-Acts books - Eph, Phil, Col, 1&2Tim, Titus, and Philemon. These 7 books contain the very latest information that Paul received, by revelation, from Jesus Christ. Much in those 7 books overrides what in Paul's 7 Acts books.
Actually, NOTHING about our future is found in Paul's Acts books or any of the other 59 all-Israel books, including the Gospels. EVERYTHING in Paul's 7 post-Acts books was contained in a mystery which was hid in God since the world began. Therefore, it is impossible that ANYTHING from the 59 Israel books is TO or ABOUT us Gentiles today, except for Christ.
Only in those 7 books will you find that we Gentiles have a possible Hope of going to Heaven. No Jew in the other 59 books EVER had a chance of going to Heaven. Search and See. Israel are an Earthly people, and the Gentiles living today are a Heavenly people. Nothing EVER given to Israel (all of which is earthly) in those all-Israel 59 books, except Christ, was EVER given to today's Gentiles. We have our own far, far better Heavenly things, which are found ONLY in Paul's 7 post-Acts epistles.