וְעַתָּ֕ה הִנֵּ֛ה צַעֲקַ֥ת בְּנֵי־יִשְׂרָאֵ֖ל בָּ֣אָה אֵלָ֑י וְגַם־רָאִ֙יתִי֙ אֶת־הַלַּ֔חַץ אֲשֶׁ֥ר מִצְרַ֖יִם לֹחֲצִ֥ים אֹתָֽם׃
און אַצונד, זע, דאָס געשרײ פֿון די קינדער פֿון ישׂראל איז געקומען צו מיר, און איך האָב אױך געזען די דריקונג װאָס די מִצרים דריקן זײ.
Chizkuni
צעקת בני ישראל באה אלי, “the outcry of the Children of Israel has come to My attention;” if you were to say that their outcry was in vain, I go on record as: וגם ראיתי את הלחץ, “and I have also taken note of their oppression;” i.e. they are fully justified in their complaints.
Ramban
AND NOW, BEHOLD, THE CRY OF THE CHILDREN OF ISRAEL IS COME UNTO ME. Even though He has already said, and I have heard their cry,176Verse 7. He says again that it has come unto Me, thus stating that “their cry has come to the Throne of My Glory, and I will no longer pardon177According to another reading: “permit Pharaoh to enslave.” Pharaoh, for the Egyptians are oppressing them exceedingly.” It is similar in sense to the expression, a rage which hath reached up unto heaven.178II Chronicles 28:9.
By way of the Truth, [the mystic lore of the Cabala], the cry of the children of Israel is a reference to Knesseth Yisrael,179“The Congregation of Israel.” Here understood in a Cabalistic sense, an allusion to the attribute of justice. similar to the verse, according to the cry of it which is come unto Me.180Genesis 18:21. I have alluded to it there.
By way of the Truth, [the mystic lore of the Cabala], the cry of the children of Israel is a reference to Knesseth Yisrael,179“The Congregation of Israel.” Here understood in a Cabalistic sense, an allusion to the attribute of justice. similar to the verse, according to the cry of it which is come unto Me.180Genesis 18:21. I have alluded to it there.
Ibn Ezra
Now - the reason that "the cry of the Israelites [has reached Me]" is that they repented. The reason "I have also seen the pressure [with which the Egyptians pressed them]" is that they made schemes against them. That is the meaning of what Yitro said: "by the result of their very schemes against them."