ישעיהו מד:ב פירוש: אבן עזרא

From the womb. With this expression the prophet alludes to Jacob (comp. Hos. 12:4; in my commentary thereon I shall explain it),¹I. E. takes the expression womb literally, and refers it to the incident recorded Gen. 25:26, in the account of the birth of Jacob and Esau. or metaphorically to the time, when Israel was declared to be the people of the Lord.

ישרון Jesurun. It is originally an adjective derived from ישר right; there is no other instance of this form.