שֹׁ֥מּוּ שָׁמַ֖יִם עַל־זֹ֑את וְשַׂעֲר֛וּ חָרְב֥וּ מְאֹ֖ד נְאֻם־יְהוָֽה׃
Be astonished, O ye heavens, at this, and be horribly afraid, be ye exceeding amazed, saith the LORD.
Read halakhic rulings (Jewish law) on Jeremiah 2:12: and classical halakhic sources.