This is called the lesser amount of indemnity condition. This is so-called forgiveness. Christians are supposed to be crucified because of their own sin, but only having faith in Jesus' crucifixion and resurrection, without having been crucified themselves, Christians are qualified to get into Paradise. This is salvation in Christianity. This is a typical example of forgiveness.
Baptism is also such a condition.
As in the time of Noah, baptism symbolized Noah's ark. Therefore, Christians are supposed to be crucified and drowned to death, but instead of flood judgment, now only water. In the beginning, they submerged in the water, but now Christians became lazy. This is a lesser amount of indemnity condition. Baptism or sacraments are instead of Jesus' blood and flesh.