וּלְזֶ֣בַח הַשְּׁלָמִים֮ בָּקָ֣ר שְׁנַיִם֒ אֵילִ֤ם חֲמִשָּׁה֙ עַתּוּדִ֣ים חֲמִשָּׁ֔ה כְּבָשִׂ֥ים בְּנֵי־שָׁנָ֖ה חֲמִשָּׁ֑ה זֶ֛ה קָרְבַּ֥ן נְתַנְאֵ֖ל בֶּן־צוּעָֽר׃ (פ)
et, pour le sacrifice de rémunération, deux taureaux, cinq béliers, cinq boucs, cinq agneaux d’un an. Telle fut l’offrande de Nethanel, fils de Çouar.
Rabbeinu Bahya
Another explanation of 'בזאת תדע כי אני ה based on the plain meaning: Through this wondrous sign and similar ones you will come to recognize Me.
A kabbalistic approach: The Ineffable Name which had been “hidden” up until now would be revealed by an attribute known as זאת. This was the יד הגדולה, “the great hand” which G’d displayed in His treatment of the Egyptians. The words describing Pharaoh’s obstinacy most clearly are found in verse 23, ולא שת לבו גם לזאת, “he did not take to heart even זאת, “G’d’s manifesting Himself as the attribute זאת,” i.e. the Ineffable Name.
A kabbalistic approach: The Ineffable Name which had been “hidden” up until now would be revealed by an attribute known as זאת. This was the יד הגדולה, “the great hand” which G’d displayed in His treatment of the Egyptians. The words describing Pharaoh’s obstinacy most clearly are found in verse 23, ולא שת לבו גם לזאת, “he did not take to heart even זאת, “G’d’s manifesting Himself as the attribute זאת,” i.e. the Ineffable Name.