In the olden days of your great grandparents, they called women who had been divorced "grass widows." That's because they had no husband and had to support themselves by themselves too. You probably know both kinds of widows.
In Jesus' day there was a widow we shall call Tamar who was very poor. She had a hard time buying enough food and clothing for her children. They loved her anyway.
At the same time there were some very rich Temple priests. The high priest was so rich that he lived in his own palace.
Not all priests were rich, of course. Most lived in ordinary houses like most people do. But those priests who worked at the Temple all the time were rich.
One reason they were rich is because they thought of extra ways to get people who worshipped to give more money to the Temple.
Up until Jesus' time, people worshipped God by cooking lamb and beef over a big open fire called an altar. Then the people would share the food with the priests.
But the Temple priests decided they wanted more money, so they brought sheep and cows and birds to the Temple to sell the worshippers. That way they got the money for the animals too.
Everyone who lived in every city went to the Temple sometimes to offer lamb or beef sacrifices, so the Temple priests got more and more money, and got more and more rich.
There were poor people who came to the Temple and needed help with a house to live in, clothing and food, but the rich priests only helped them a little bit. Poor people like the widow Tamar.
One day Jesus saw how the priests had set up a store in the Temple courtyard. He turned over the tables where they were collecting money and ran all the animals out of the Temple. He said the Temple was supposed to be a place of prayer, not a place to make money.
Right after that, the widow Tamar came. Jesus knows all about everyone and knew how poor she was. He watched her put her last penny in the collection box at the Temple.
Jesus said that the widow gave more than everyone else because she gave everything she had.
When you give the church or a needy friend even a quarter when that is all the money you have, in God's eyes, that is more than when grownups give a dollar who have many dollars.