Though Emma pleads with him, explaining she has no wish to eradicate the demons, Norman is set in his decision and deaf to her arguments.  To resolve their dispute, Emma proposes a deal.
I say this with certainty...
...أقول هذا على وجه اليقين
Ich kann euch versichern,
De algo estoy seguro…
Je te le dis…
मैं यह निश्चित होकर कह रहा हूँ।
Eu tenho certeza.
Я уверен в этом.