Sforno on Genesis 18:33/ספורנו על בראשית י״ח:ל״ג

1וילך ה, Avraham remained in a waiting posture. He had not given up hope to expect further prophetic insights until it became clear to him that G’d’s presence had departed. We cannot help noting the contrast with Genesis 4,16 where the Torah reports the termination of G’d speaking to Kayin as ויצא קין מלפני ה', Kayin terminating the interview with G’d by his being the first one to leave while the presence of G’d had not yet departed.

2ואברהם שב, he returned from the place to which he had accompanied the angels, where G’d’s word had come to him.

3למקומו, to his home.