All salvation depicted and taught in scripture is conditional on just one thing, believe in Jesus Christ.
The basics are:
John 3:16
““For God so loved the world, that He gave His only Son, so that everyone who believes in Him will not perish, but have eternal life.”
John 3:16 NASB2020
“For God so loved the world, that He gave His only Son, so that everyone who believes in Him will not perish, but have eternal life.
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Conversely, everyone that does not believe in Him will perish.
John 3:
“The one who believes in Him is not judged; the one who does not believe has been judged already, because he has not believed in the name of the only Son of God.”
John 3:18 NASB2020
The one who believes in Him is not judged; the one who does not believe has been judged already, because he has not believed in the name of the only Son of God.
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No belief in Christ no salvation.
Romans 1
“Therefore there is now no condemnation at all for those who are in Christ Jesus.”
Romans 8:1 NASB2020
Therefore there is now no condemnation at all for those who are in Christ Jesus.
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Conversely, there is condemnation for those who are NOT in Christ.
Ephesians 2
“For by grace you have been saved through faith; and this is not of yourselves, it is the gift of God;”
Ephesians 2:8 NASB2020
For by grace you have been saved through faith; and this is not of yourselves, it is the gift of God
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No faith, no grace.
All need to be read under this condition. God did send His Son to save the whole world but only those that believe will be saved.
Universalism is not supported by scripture. Only those ignoring the obvious and interpreting the Bible outside of the Bible by perverting the verses will be lead to error.