No definite interpretation can be given for the expression paḥad yiṣḥāq. It only occurs in Gen. 31.42, Gen. 53 (in the latter verse as paḥad ʾābîw yiṣḥāq). Paḥad yiṣḥāq was interpreted as a divine name by Alt (1929) because of its archaic impression (cf. ʾăbîr yaʿăqŏb) and because of its apparent resemblance to divine names of the “God of X” type. This designation was used for the god of Isaac, which Alt thought belonged to the category of the God of the Fathers.
The interpretation of the expression…