The Three Appearances of Christ

How is it that sin is put away? Is there something we do that contributes in any way to the remission of sin? Why is it necessary for the death of the testator in order to make the will or testament effective? Are we at the ‘end of times’? How is Christ’s blood shed unto death and not merely His blood shed, vital to salvation? How is it that only God can satisfy God but only a man could be a substitute for a man? Did the blood of bulls or goats take away sin? Does your faith save you? What is the difference between Christ’s death as a Sacrifice and the sacrifices of atonement of the Old Testament? What is the significance