וְאַתָּ֞ה דַּבֵּ֨ר אֶל־בְּנֵ֤י יִשְׂרָאֵל֙ לֵאמֹ֔ר אַ֥ךְ אֶת־שַׁבְּתֹתַ֖י תִּשְׁמֹ֑רוּ כִּי֩ א֨וֹת הִ֜וא בֵּינִ֤י וּבֵֽינֵיכֶם֙ לְדֹרֹ֣תֵיכֶ֔ם לָדַ֕עַת כִּ֛י אֲנִ֥י יְהוָ֖ה מְקַדִּשְׁכֶֽם׃
"Ty téż powiesz synom Israela tak: Wszakże Sabbatów Moich przestrzegajcie; bo to znak między Mną a wami, w pokoleniach waszych, byście poznali, żem Ja Wiekuisty, który poświęcam was.
The Jewish Spiritual Heroes
Rabbi Jose followed in the footsteps of Rabbi Akiba in the matter of expounding every saying of the Torah which might have seemed to be superfluous. Thus he explained the verse “but my Sabbaths you shall observe” (Ex. 31:13) to indicate that certain labors may be performed on the Sabbath such as work in the Temple or in order to save a human life. This interpretation he based on the word ״אך״ in the Hebrew text.8)תוספתא שבת פרק ט״ז.