Charles H. Spurgeon on Psalms 103:13

Like as a father. It is to be observed in this verse, what kind of mercy the prophet attributes to God. He says not, As man pities man, as the rich the poor man, as the strong the feeble, as the freeman the captive, but he makes mention of that pity which a father shows to his son, which is the greatest of all. The word Mxr itself supports this view, as it properly signifies viscarum commotis. An example of this we have in 1Ki 3:23-27 in the case of the woman who could not bear the slaughter of her child... And afterwards in the case of the father of the prodigal. Lu 15:11-32. Musculus.