Jesus was God and man in one person. The man part of Jesus was our humanity, Jesus was the representative of the human race, just as Adam was the representative of the human race, "For as by one man's disobedience (Adam) many were made sinners (all of humanity) so by the obedience of one (Christ) many (All of humanity) shall be made righteous" Romans 5:19. Jesus has provided salvation for everyone, Hebrews 2:9. But nothing is ours until it is received by faith.
The law says, "The soul that sins must die". Jesus died for us. All sin has been atoned for. Did the God part of Jesus die? No, because he resurrected himself, John 2:19. Humanity has been put to death and resurrected in Jesus Christ. All things have been accomplished in Jesus Christ.