Giving all one has to live on, and trusting God for provision
Mark 12:41–44 (ASV 1901)
41And he sat down over against the treasury, and beheld how the multitude cast money into the treasury: and many that were rich cast in much. 42And there came a poor widow, and she cast in two mites, which make a farthing. 43And he called unto him his disciples, and said unto them, Verily I say unto you, This poor widow cast in more than all they that are casting into the treasury: 44for they all did cast in of their superfluity; but she of her want did cast in all that she had, even all her living.
Luke 21:1–4 (ASV 1901)
And he looked up, and saw the rich men that were casting their gifts into the treasury. 2And he saw a certain poor widow casting in thither two mites. 3And he said, Of a truth I say unto you, This poor widow cast in more than they all: 4for all these did of their superfluity cast in unto the gifts; but she of her want did cast in all the living that she had.