וַיַּ֞ךְ בְּאַנְשֵׁ֣י בֵֽית־שֶׁ֗מֶשׁ כִּ֤י רָאוּ֙ בַּאֲר֣וֹן יְהוָ֔ה וַיַּ֤ךְ בָּעָם֙ שִׁבְעִ֣ים אִ֔ישׁ חֲמִשִּׁ֥ים אֶ֖לֶף אִ֑ישׁ וַיִּֽתְאַבְּל֣וּ הָעָ֔ם כִּֽי־הִכָּ֧ה יְהוָ֛ה בָּעָ֖ם מַכָּ֥ה גְדוֹלָֽה
And He smote of the men of Beth-shemesh, because they had gazed upon the ark of the LORD, even He smote of the people seventy men, and fifty thousand men; and the people amourned, because the LORD had smitten the people with a great slaughter.
Read Kabbalistic (mystical) interpretations of I Samuel 6:19: Zohar and classical Jewish mystical sources, free online.