John Gills Exposition of the Bible Commentary - Genesis 22:19
So Abraham returned to his young men ,.... He had left at a certain place with the ass, while he and Isaac went to the mount to worship; and who stayed there till he came to them, according to his order, Genesis 22:5 ; no mention is made of Isaac, but there is no doubt that he returned with Abraham, since we hear of him afterwards in his house; for as to what the Targum of Jonathan says, it cannot be depended on, that the angels took Isaac and brought him to the school of Shem the great,... read more
Matthew Henry's Complete Commentary - Genesis 22:15-19
Abraham's obedience was graciously accepted; but this was not all: here we have it recompensed, abundantly recompensed, before he stirred from the place; probably while the ram he had sacrificed was yet burning God sent him this gracious message, renewed and ratified his covenant with him. All covenants were made by sacrifice, so was this by the typical sacrifices of Isaac and the ram. Very high expressions of God's favour to Abraham are employed in this confirmation of the covenant with him,... read more