וַיֹּ֤אמֶר אֱלֹהִים֙ אֶל־אַבְרָהָ֔ם וְאַתָּ֖ה אֶת־בְּרִיתִ֣י תִשְׁמֹ֑ר אַתָּ֛ה וְזַרְעֲךָ֥ אַֽחֲרֶ֖יךָ לְדֹרֹתָֽם׃
Targum Jonathan on Genesis
And the Lord said to Abraham, And thou shalt observe my covenant, thou and thy sons after thee in their generations.