מִֽי־פָעַ֣ל וְעָשָׂ֔ה קֹרֵ֥א הַדֹּר֖וֹת מֵרֹ֑אשׁ אֲנִ֤י יְהוָה֙ רִאשׁ֔וֹן וְאֶת־אַחֲרֹנִ֖ים אֲנִי־הֽוּא׃
Who hath wrought and done it? He that called the generations from the beginning. I, the LORD, who am the first, And with the last am the same.
Read halakhic rulings (Jewish law) on Isaiah 41:4: and classical halakhic sources.