I behaved myself as though [he had been] my friend [or] brother,.... Meaning either Saul or Doeg the Edomite, or some such evil man; somewhat like this he says of Ahithophel, Psalms 41:9; and Arama thinks he is meant here; as Christ of Judas, whom he called friend, when he came to betray him; and who not only ate with him at table of his bread, but was steward of his family, and carried the bag,
I bowed down heavily, as one that mourneth [for his] mother; or as a mother that mourneth for her son, as Jarchi interprets it, whose affections are very strong; and thus Christ wept over Jerusalem, and had a tender concern for and sympathy with the Jews, his implacable enemies, and wept over them, and prayed for them, Luke 19:41.