We live in a dispensation where knowledge is on the increase and that has caused many to derail from the truth - The Word of God. The Bible is our final authority when it comes to truth finding - He is the way, the truth and the life: no one cometh into the father but by me. John 14:6. Once saved isn't always saved can only be can only be explained by the TRUTH of God's Word.
1. Work out your salvation with fear and trembling (Phil.2:12) - If our salvation doesn't stand the risk of being lost as a result of disobedience, this scripture would not have existed.
2. Without are dogs, soccerers murderers....and those who maketh a lie...(Rev. 22:14-15) - once you have been salvaged, you are to depart from iniquity (2 Tim.2:19) otherwise you stand the risk of loosing your salvation.
3. Only those with pure heart will see God (Matt.5:. This is true because God is too holy to behold iniquity (Hab.1:13)
4. Without holiness no eyes shall see God ( Heb.12:14)
5. You are to be without blemish (Ephe.5:27).
Looking at the above scriptures, it's clear that you can't claim you have received Jesus and still having your hands soiled with the corruption of this world expect to spend eternity in heaven with God. How people think they can take the salvation of their souls and drop the purity part of the same salvation is surprising. If you cannot master righteousness here on earth how do you think you can when you get to heaven? That is why there isn't unrighteousness in heaven.
The following can make you secure your salvation and live uprightly.
1. Avoidance of bad company (1 Cor.15:33)
2. Constant study of the Word of God (PS.119:11)
3. Not neglecting the fellowship of brethren (Heb.10:25)
4. Constant prayers (1 Thes.5:17)
5. Breaking every link with sin (2Cor.6:14)
6. Always share the good news to others
More also, make the effective use of:
a. The communion - Through communion, the pure unadulterated life of Christ and the benefits of redemption are supernaturally transfered to us.
b. The anointing oil - By the anointing yokes of sin are broken
c. Always ask for God's mercy to live right ( Heb. 4:16).
God bless you.

I will debunk only this lie you put up here that has made your post invalid

gloryboy01:

1. Work out your salvation with fear and trembling (Phil.2:12) - If our salvation doesn't stand the risk of being lost as a result of disobedience, this scripture would not have existed.

You failed to include the preceding scripture of the Phil 2:12 you quoted, perhaps that would have given you the proper understanding of Phil 2:12

Phil 2:11 And that every tongue should confess that Jesus Christ is Lord, to the glory of God the Father.

Mark the word "THAT JESUS CHRIST IS LORD ".
The contrast is not between Jesus Christ and your ability to work out your salvation through your works, the contrast is between Jesus Christ and every religious founders other than the Christian faith which Jesus founded.
In other words, Jesus Christ is Lord over all these religions or Faiths.
Example is the Jewish faith, because for the Jews themselves to be saved, they have to abandon their old testament covenant they had with their fore-father Abraham and follow Jesus Christ. That's why Jesus told the Jews that before Abraham, he was. Meaning he is greater than Abraham.
By extension, this implies that the Christian faith(Christianity) is greater than Judaism.

Paul says Romans 10:1 Brethren, my heart's desire and prayer to God for Israel is, that they might be saved.

Meaning that Israel cannot be saved until they believe in Jesus, so is everyone.

The summary of all I'm saying is that, the Phil 2:12 you quoted(work out your salvation..) isn't
a contrast between Jesus Christ and your works, but rather, it is a contrast between Jesus Christ and other faiths.

That means when Paul said work out your salvation he was telling Christians not to deviate from their faith in Christ, he wasn't telling them to work out their moral lives or good living