Contrary to what Latter-day Saint leaders have taught – the cross is far more than just the instrument of death the Romans used to kill the physical body of Jesus. It plays a significant role in the salvation of all who choose to follow Jesus.
When someone puts their faith in Jesus, his death on the cross pays the penalty due for our sins. Our sins are placed on Jesus as the righteousness of Jesus is credited to us. His death on the cross paid the penalty for our sins – ALL of them!