Charles H. Spurgeon on Psalms 105:26

He sent Moses his servant; and Aaron whom he had chosen. When the oppression was at the worst, Moses came. For the second time we have here the expression, "he sent"; he who sent Joseph sent also Moses and his eloquent brother. The Lord had the men in readiness and all he had to do was to commission them and thrust them forward. They were two, for mutual comfort and strength, even as the apostles and the seventy in our Lord's day were sent forth two and two. The men differed, and so the one became the supplement of the other, and together they were able to accomplish far more than if they had been exactly alike: the main point was that they were both sent, and hence both clothed with divine might.