To enter the kingdom of heaven.
All of us know that it is rather hard to enter the heaven. Since we need to overcome many hardships and difficulties before we abide in there. Moreover, we have many things and friends who are important for us. And it is always unpleasant to leave them all in the moment of death. Perhaps it is easier for animals to pass away, because they do not realize what they are losing. But, we human beings do. So we are to learn from the world of nature as Jesus taught us. Many times he used the examples taken from the flora and fauna. Thus, his disciples often were really astonished, because they would have never thought like that. Similar to us, they had many questions and tried to find the answers. But they were too limited to do it on their own. For that reason, Jesus has always given them support and promised them the reward of eternal life. In such a way he changed their point of view not to be focused just on the earthly matters. They were surprised that it was possible to raise their minds up and to perceive other realities which were waiting for them in the kingdom of heaven.