John Calvin on Genesis 26:11

11. And Abimelech charged all his people. In denouncing capital punishment against any who should do injury to this stranger, we may suppose him to have issued this edict as a special privilege; for it isnot customary thus rigidly to avenge every kind of injury. Whence, then, arose this disposition on the part of the king to prefer Isaac to all the native inhabitants of the country, and almost to treat him as an equal, except that some portion of the divine majesty shone forth in him, which secured to him this degree of reverence? God, also, to assist the infirmity of his servant, inclined the mind of the heathen king, in every way, to show him favor. And there is no doubt that his general modesty induced the king thus carefully to protect him; for he, perceiving him to be a timid man, who had been on the point of purchasing his own life by the ruin of his wife, was the more disposed to assist him in his dangers, in order that he might live in security under his own government.