Targum for Exodus 1:5
וַֽיְהִ֗י כָּל־נֶ֛פֶשׁ יֹצְאֵ֥י יֶֽרֶךְ־יַעֲקֹ֖ב שִׁבְעִ֣ים נָ֑פֶשׁ וְיוֹסֵ֖ף הָיָ֥ה בְמִצְרָֽיִם׃
And all the souls that came out of the loins of Jacob were seventy souls; and Joseph was in Egypt already.
Targum Jonathan on Exodus
And the number of all the souls coming from the thigh of Jakob, seventy souls, with Joseph and his sons, who were in Mizraim.
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