"... The singular Torah is not used here, but torot, the plural. Yet how did Abraham know of them? This indicates that God conditioned father Abraham’s two kidneys to act like two sages, and they were instructing him and counselling him, and teaching Wisdom (Torah) all night, as it is said, ‘I will bless the Lord who has counselled me, even by night my kidneys have instructed me (Psalm 16:7). According to this early source, therefore, Abraham’s superiority over the ‘ten generations’ was due to his continuous acquisition of hokhmah, the wisdom of the Torot. As to the Laws, the anonymous teacher is evidently alluding here to the interpretation of torotai found in amoraic sources (see Berit Tora 28a): ‘[The expression torotai implies two Laws], the one the Written Law, the other the Oral Law.’ See further the proper in Tanhuma, ed. Buber, I, pp. 71–2, where the theme of Abraham’s observance of ‘all the Laws’ (kol ha-Torah kula) is developed in conjunction with Proverbs 2:7, ‘He layeth up sound wisdom (tushiyyah) for the upright (yesharim)’ ... This imagery, together with its proof-text, Psalm 16:7, is recorded in older sources in the name of R. Aqiva’s pupil, R. Shimon b. Yohai (see Genesis Rabbah 61:1) ..."