Giving all one has to live on, and trusting God for provision

Scripture references

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.

Stories

An old woman gives three shillings out of her meagre pension to support the Goforths in the all important task of telling people about Jesus.
After he had a dream about fighting Manchurian bandits, a little boy gave all his savings to support the mission work in Manchuria. The amazing story of this boy’s giving when told to an audience in Boston challenged the people to give enough money to support two evangelists in Manchuria for year.
A sixty year old poor widow sold her house - her only possession and donated all of the proceeds to support the orphan work. All attempts, including one by George Müller, to dissuade her from giving away all of the money was rebuffed; her mind was made up to give God everything.
When a very poor seamstress donated a hundred pounds to the orphan work out of the meagre amount she received as legacy from her grandmother's estate, George Müller asked to know why she made such a donation and her golden reply was: “The Lord Jesus has given His last drop of blood for me, and should I not give Him this hundred pounds?”
The poorest Christian in the Tungliao church, responds to the plea to give so a plot of land could be purchased on which their church was to be built by selling the very best pig on his farm and giving all the proceeds for this noble cause.