Exodus 16:14

There was no strength necessary in gathering the manna. A strong right arm was of no use-the thing was too delicate for man's strength to come in and destroy. To gather it delicately, with the weakness of man, was needed, so that the soul can say, That which I have gathered up of Christ today, I found it to be strength made perfect in my weakness. It was, "when I am weak, then I am strong."