And those who omit "could afford to...but did not" didn't learn to read very well. 
Jesus sat down opposite the place where the offerings were put
and watched the crowd putting their money into the temple treasury.
Many rich people threw in large amounts. But a poor widow came
and put in two very small copper coins, worth only a few cents.
Calling his disciples to him, Jesus said, “Truly I tell you, this poor widow
has put more into the treasury than all the others.
They all gave out of their wealth; but she, out of her poverty,
put in everything—all she had to live on.”
Mark 12:41-44