Why man needs salvation

In the beginning God created man perfect and without sin.
John 1:3 "Through him all things were made; without him nothing was made that has been made." 

Then in the Garden of Eden Adam sinned.
Romans 5:12a"Therefore, just as sin entered the world through one man.."

Because Adam is the father of all mankind, all men inherited his sin nature.
Romans 5:12b"..and death through sin, and in this way death came to all men, because all sinned-"

The sin nature causes man to sin.
Romans 3:23"for all have sinned and fall short of the glory of God"  

Man's sin separates him from God now and for all eternity in hell.
Romans 6:23"For the wages of sin is death;..." 

Jesus, the God man, came to earth to pay the penalty for man's sin.
Romans 5:8"But God demonstrates his own love for us in this: While we were still sinners, Christ died for us."

If a man repents of his sin and believes Jesus died for his sins, he will be saved.
Romans 10:9, 10, 13,  "That if you confess with your mouth, "Jesus is Lord," and believe in your heart that God raised him from the dead, you will be saved.  For it is with your heart that you believe and are justified, and it is with your mouth that you confess and are saved.  for, "Everyone who calls on the name of the Lord will be saved." 

If you would like to be saved, pray the following prayer to God in heaven and believe it in your heart:  Dear Jesus, I know I am a sinner and you died to save me from my sin.  I am trusting you now to save me and give me the gift of eternal life.