God provides only what is needed

Scripture reference

2 Corinthians 8:15 (ASV 1901)

15as it is written, He that gathered much had nothing over; and he that gathered little had no lack.

Stories

Jackie Pullinger shares about God's faithfulness and constant provision despite the increasing needs of her ministry and her not teaching full-time. God ensured they had enough provisions for each day.
At two different times in the autumn of 1841 when needs were most dire in the orphanages, the Lord used a poor woman and an anonymous donor to provide exactly what was needed to meet the feeding needs at the time.
The Holy Spirit led Rees Howells to stop making contributions to an insurance fund for himself, while at the same time leading him to make a contribution to the same fund for someone else. The Lord was teaching Howells to trust Him as in “Whoever gathered much had nothing left over, and whoever gathered little had no lack” (2 Cor. 8:15), while the man for whom Howells had made the insurance contribution was brought to repentance and salvation as a result.
Mrs. Luffe (Sister Abigail) needed to buy a house for the blind, lame, and aged though she had no means. God provided everything she needed and just in time.