When God gave mankind the right to eat meat, He told Noah that the life of the flesh was in the blood. Consequently, the eating of blood was forbidden. Later under Moses, animal sacrifices were established as their blood would provide atonement for the soul of the sinner. But atonement is only a covering since the blood of bulls and goats cannot remove sin. Now what?
We all have unanswered questions about life. Why did this happen and not that? Why did this happen to me? Etc. - our questions are many. Asaph had questions, too, about all the evil in the world, and these weighed on him so much that he nearly lost his faith. Then God brought him out of his despondency by reminding him of the final end of both the wicked and the righteous.
When Jesus was on the earth, people had questions for Him. Some were sincere in their questions, but others were just trying to find accusations against Him. However, Jesus also had questions for those who heard Him. These were questions of life and death. And today, you and I still need to answer these questions.
Believers know that God has divine power and can do anything which is consistent with His character. But when God decides to work through His people (which He does a great deal of the time), He is, in effect, willing to limit His power to what they will do. This should cause every disciple to seriously consider their work in the kingdom.