מדרש על שמות 3:9

(Exod. 3:9:) BUT NOW LOOK, THE CRY OF ISRAEL'S CHILDREN HAS COME UNTO ME, AND I HAVE ALSO SEEN THE OPPRESSION < WITH WHICH THE EGYPTIANS OPPRESS THEM >. <This verse > teaches that the Holy One looked at the Egyptians, at how they had enslaved Israel. It is so stated (ibid.): LOOK, THE CRY OF ISRAEL'S CHILDREN HAS COME UNTO ME, AND I HAVE ALSO SEEN THE OPPRESSION…. I, as it were, am with them. <As for THE OPPRESSION > WITH WHICH THE EGYPTIANS OPPRESS THEM, (according to vs. 8) I HAVE COME DOWN TO DELIVER THEM <OUT OF THE HAND OF THE EGYPTIANS >.

"and our lachatz": This is oppression, viz. (Shemoth 3:9): "and I have also seen the oppression wherewith the Egyptians oppress them."