Questions For Those Who Believe Once Saved Always Saved

For those of you who believe in “Once Saved Always Saved,” please consider these questions ...What does II Chronicles 15:2 (“If You Forsake Him, He Will Forsake You”) say about a saint who forsakes God?Who does Psalms 31:23 (“O love the Lord, all ye his saints: for the Lord preserveth the faithful …”) say God will preserve, and who does that imply He will not preserve?In Genesis 2:17 God said to Adam and Eve - “But of the tree of the knowledge of good and evil, thou shalt not eat of it: for in the day that thou eatest thereof thou shalt surely die.” So weren’t Adam and Eve saved, then lost?What happens if a Christian commits the blasphemy against the Holy Spirit (according to Matt 12:31-32 - "All manner of sin and blasphemy shall be forgiven unto men: but the blasphemy against the Holy Ghost shall not be forgiven unto men ... neither in this world, neither in the world to come")?What happens to a Christian that is unwilling to forgive their brother (according to Matt 6:14-15 - "if ye forgive not men their trespasses, neither will your Father forgive your trespasses")?What about a Christian who is unwilling to confess his sins (according to I John 1:9 - "If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness")?