Good post except for some problems here and there.
Salvation is in a person, and your faith in that person person is what bring salvation to you.
Not any person. I am sure that is not what you meant but that is what it says.
Salvation is only in the third person of the Triune God, Jesus Christ.
Until resurrection there was no salvation, so the when of salvation is after resurrection.
Not true in the Old Testament people were also saved but through faith in God and the priests had to made sacrifices to atone for their sins.
The reason for salvation is because we are redeemable by nature, why? Because we are in the class of God not angels. (Genesis 1:26)
I am not sure what the above means.
We need salvation because: all have sinned and fall short of the glory of God.
Rest of the post is 💯👍