How to pronounce “swear on” in English

I'm trying not to swear on this interview.

I don't know if we're allowed to swear on here.

And we didn't go there like we're going to swear on this show.

And then he said to me, "You have to swear on your mother's life that you won't say anything about what I'm about to show you."

He said, "Go ahead, swear on your mother's life." "I swear on my mother's life."