so help me (God)

US /soʊ hɛlp mi (ɡɑd)/
UK /soʊ hɛlp mi (ɡɑd)/
"so help me (God)" picture
1.

used to emphasize that one is telling the truth or making a very serious promise or threat

:
I swear I didn't do it, so help me God!
I'll get to the bottom of this, so help me.