Rashi, on Isa 51:1

“Give ear to me, you that follow that which is just, and you that seek the Lord: look unto the rock whence you are hewn, and to the hole of the pit from which you are dug out.”

“look at the rock whence you were hewn from it. and at the hole of the pit Heb. מַקֶּבֶת. With which they penetrate (נוֹקְבִין) and hew the pits. you were dug with which you were dug. you were dug Heb. נֻקַּרְתֶּם, an expression similar to (Ex. 33.22) “The cleft (נִקְרַת) of the rock”; (Prov. 30:17) “The ravens of the brook shall pick it (יִקְּרוּהָ).” And who is the rock? He is Abraham your forefather. And who is the hole? She is Sarah who bore you. [תְּחוֹלֶלְכֶם means] ‘who bore you,’ an expression similar to (infra 66: 8) “For Zion experienced pangs (חָלָה) and also bore.””

Imported from an open dataset — not yet checked against the printed edition.