Musar על עבודה זרה 36:16

According to the severity of the sin and its consequences, the True Judge increased its punishment as our sages of blessed memory taught us: "levity is extremely severe; it starts with suffering and ends in utter destruction as written (Isaiah 28:22):'And now do not be mockers lest your bonds be strengthened for a decree of destruction have I heard...' " (Avodah Zara 18b).