It was because of Adam’s sin that our good God acted to save him, and his wife and his posterity from His pronounced judgement which is physical death and eternal judgement in the lake of fire. Shall not man be grateful that he was not left to suffer eternal judgement? Alas, God gave man a choice to receive His salvation. The gospel is freely given and freely saves all who would believe – Romans 10:9-10 That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved. 10 For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation.