I was reading in John 6:22-36 and found that we have a job. In these scripture verses, the people came looking for Jesus. Jesus recognized that the reason they sought him wasn't so they could hear his teachings. It wasn't even because they had seen miracles. It was because of the food they had been given by Jesus earlier. (Remember the story of the 5 loaves and 2 fishes.)
Jesus gives them these words to help them understand. "This is the work of God, that ye believe on him whom he hath sent." That's our job too. Do we ever get caught up in focusing on the cares of our world that we forget what our job is?
The people in this story were focused on the fact that they would be able to get food, to be filled! How much more important is it to "believe on him whom he hath sent."? This is what is important. Focusing on the Saviour and his teachings is important. Focusing on worldly cares is not in our job description.
Even after telling the people what they should do, they didn't get it. They continued to focus on food. They asked for a sign and then told him that "Our fathers did eat manna in the desert...He gave them bread from heaven to eat."
Jesus answered them, "Moses gave you not that bread from heaven; but my Father giveth you the true bread from heaven." Jesus then explains the concept of the bread of life which means, in other words, Jesus Christ.
Then the scriptures refer back to the fact that the people have seen the Lord, yet not believed. Questions for self. Am I missing the plain and simple truth that is right in front of me? Am I doing my "job"?