The sages, the prophets, have shown their spiritual advancement at the moment of their death. That is the time when the truth comes out; then there can be no falsehood, and a man has no chance of acting. When his soul is passing from the earth, where his heart was is shown -- on the earth or in heaven. Besides, the person who has earned peace throughout his life then shows his wealth, he passes away peacefully and with willingness to meet what awaits him in the life beyond.