וַיֹּ֖אמֶר לְמָחָ֑ר וַיֹּ֙אמֶר֙ כִּדְבָ֣רְךָ֔ לְמַ֣עַן תֵּדַ֔ע כִּי־אֵ֖ין כַּיהוָ֥ה אֱלֹהֵֽינוּ׃
Targum Jonathan on Exodus
And he said, Tomorrow. And he said, According to thy word: that thou mayest know that there is none like the Lord our God.
Targum Jerusalem
Give a sign, and keep at a distance, till I shall have prayed for thee.