וַיִּֽחַר־אַ֤ף יְהוָה֙ בְּעֻזָּ֔ה וַיַּכֵּ֥הוּ שָׁ֛ם הָאֱלֹהִ֖ים עַל־הַשַּׁ֑ל וַיָּ֣מָת שָׁ֔ם עִ֖ם אֲר֥וֹן הָאֱלֹהִֽים׃
And the anger of the LORD was kindled against Uzzah; and God smote him there for his error; and there he died by the ark of God.
Read kabbalistic (mystical) interpretation of II Samuel 6:7: and classical mystical sources.