וְאַתָּ֞ה דַּבֵּ֨ר אֶל־בְּנֵ֤י יִשְׂרָאֵל֙ לֵאמֹ֔ר אַ֥ךְ אֶת־שַׁבְּתֹתַ֖י תִּשְׁמֹ֑רוּ כִּי֩ א֨וֹת הִ֜וא בֵּינִ֤י וּבֵֽינֵיכֶם֙ לְדֹרֹ֣תֵיכֶ֔ם לָדַ֕עַת כִּ֛י אֲנִ֥י יְהוָ֖ה מְקַדִּשְׁכֶֽם׃
“At ikaw, magsalita ka sa mga anak ng Israel, na nagsasabi: Gayunpaman, ang Aking mga Sabbath ay tutuparin ninyo, sapagkat ito ay isang tanda sa pagitan Ko at ninyo sa buong salinlahi ninyo, upang malaman na Ako ang Walang-Hanggan na nagpapabanal sa inyo.
Jerusalem Talmud Yoma
From where that any uncertainty of a danger to life pushes the Sabbath aside? Rebbi Abbahu in the name of Rebbi Joḥanan: Only you shall keep My Sabbaths;143Ex. 31:12. a diminution. Some want to say, the Torah said,144Since אַךְ everywhere is taken as sign of a diminution, but there is no indication of what is excluded from the observation of the Sabbath, the rabbinic authorities are empowered to determine the exclusion by an argument. Babli 85b, Mekhilta dR. Ismael, Ki Tlssa. desecrate the Sabbath for him, so he will dwell and keep many Sabbaths.