A born again man can lose his salvation
Hebrews 6:4-6 King James Version (KJV)
4 For it is impossible for those who were once enlightened, and have tasted of the heavenly gift, and were made partakers of the Holy Ghost,
5 And have tasted the good word of God, and the powers of the world to come,
6 If they shall fall away, to renew them again unto repentance; seeing they crucify to themselves the Son of God afresh, and put him to an open shame.
Ezekiel 18:24 But when the righteous turneth away from his righteousness, and committeth iniquity, and doeth according to all the abominations that the wicked man doeth, shall he live? All his righteousness that he hath done shall not be mentioned: in his trespass that he hath trespassed, and in his sin that he hath sinned, in them shall he die.
if you know God's Truth in the Scriptures but intentionally sinning; you will go to hellfire.
Hebrews 10:26 For if we sin wilfully after that we have received the knowledge of the truth, there remaineth no more sacrifice for sins,
27 But a certain fearful looking for of judgment and fiery indignation, which shall devour the adversaries.
So a Born Again man can lose his salvation if he will not stay in doing Godly works commanded by God that can be read in the Christian Scriptures.
you are not yet saved today. you are just candidate for eternal salvation but if you stop doing Godly works and turned evil then you'll lose your salvation and hellfire is your final destination.