# in the third year

Every three years the people of Israel gave a tenth of the harvest to the poor. 

# fatherless

These are children whose parents have both died and do not have relatives to care for them.

# widow

This means a woman whose husband has died and has no children to care for her now that she is old.

# eat within your city gates and be filled

"so that those within your towns may have enough food to eat"