וּבְתַבְעֵרָה֙ וּבְמַסָּ֔ה וּבְקִבְרֹ֖ת הַֽתַּאֲוָ֑ה מַקְצִפִ֥ים הֱיִיתֶ֖ם אֶת־יְהוָֽה׃
And at Taberah, and at Massah, and at Kibroth-hattaavah, ye made the LORD wroth.
Read kabbalistic (mystical) interpretation of Deuteronomy 9:22: and classical mystical sources.