The Bible describes Jesus' disciples discussing with one another which of them might be the greatest among them. Then, Jesus said to them, "Are you able to drink the cup that I am about to drink?" Later, the disciples really took part in Jesus' suffering and became great among people. True believers in the Lord say that their ultimate goal is to enter Heaven. In order to gain what we want, we should undergo certain processes. In other words, we should serve others, cast off sin and evil, and joyfully drink the cup of Jesus' suffering.