Why isn't Galatians 6:7 about salvation?
Because it's about reward for lifestyle obedience is why.
Jesus referred to it as "having life ABUNDANTLY" in John 10:10. “The thief comes only to steal and kill and destroy; I came that they may
have life, and have it abundantly."
Peter referred to it as "having an ABUNDANT ENTRANCE" into the kingdom in 2 Pet 1:11.
"for in this way
the entrance into the eternal kingdom of our Lord and Savior Jesus Christ
will be abundantly supplied to you."
Do you not know corruption is damnation? Do you not know everlasting life is salvation?
Do you not know that the gifts of God are irrevocable? Rom 11:29 - for the
gifts and the calling of God are irrevocable.
Do you not know that eternal life is a gift of God? Rom 6:23 - For the wages of sin is death, but the
free gift of God is eternal life in Christ Jesus our Lord.
Do you not know that Jesus promised that those who believe HAVE eternal life and will NOT come into condemnation? John 5:24 - “Truly, truly, I say to you, he who hears My word, and believes Him who sent Me,
HAS eternal life, and
does not come into judgment, but has passed out of death into life.
Do you not know that Jesus promised that those He gives eternal life WILL NEVER PERISH? John 10:28 - and
I give eternal life to them, and they will never perish; and no one will snatch them out of My hand.
The theology of loss of salvation does not know these things.