5503. 'Saying, What is this that God has done to us?' means owing to so great an act of providence. This is clear from the meaning of 'God doing' as providence, for no other expression than providence can be used to describe everything done by God. The reason for this is that everything done by God or the Lord has an eternal quality and an infinite one; and the word 'providence' has the same implication. The amazement of the brothers is the reason for the meaning here - owing to so great an act of providence.