In the first one, Elkanah gives food to both his wives, though Peninnah was bugged that hubby gives Hannah a double portion because she's childless (and Peninnah never lets her forget it).
In the Gospel, Jesus is walking along the Sea of Galilee, where he calls Simon, Andrew, James, and John to follow him. Now, there were more than two boats along the shore, and certainly more than four fishermen there. What made Jesus choose them and not the guys in the next boat? I like to think about the boats tied up between Simon and Andrews' and James and Johns', and the guys who worked on them. Imagine them seeing Jesus walk past, say something to S., A., J., & J., and they all walk away. Imagine them wondering, "What's wrong with us, Jesus? What are we, chopped liver?"
How many times do we forget about what God has given us or done for us, and focus on what we don't have or didn't get because someone else did?
Scott Hahn had a great analogy to tell the difference between envy and jealousy. Envy, he said, is when you see your neighbor's new car and decide to get a second job to make money to buy yourself one. Jealousy is when you see your neighbor's new car and decide to scratch the paint job with your keys.