בָּא כְּגַנָּב, בָּא כְּגַנָּב בַּלַּיְלָה

ביטוי (אנגלית)

Came like a thief, came like a thief in the night

הגדרה (אנגלית)

Figuratively: behaved in a way that appears suspicious or illegal.

("They rush on the city; they run on the wall; they climb up into the houses; they enter in at the windows like a thief." - Joel 2:9)