Comfort ye your hearts. — Heb., strengthen ye, the original meaning of comfort, a word formed from the Latin fortis = strong, brave. The heart in Hebrew is the sum total of all the powers, mental and bodily, of the whole man.
After that ye shall pass on. — Coming at noon, the travellers after rest and refreshment would continue their journey. It is quite plain that Abraham still regarded them as passing wayfarers.
Therefore... — Abraham thus suggests that his tent was pitched near to the route on purpose that he might exercise that hospitality which was and continues to be the sacred duty of an Arab sheik.