I personally don't think we'll ever hear this line myself, but if it's coming it'll be in Endgame. So what's your guess on the context? A call to action, or something else?

I think if Cap does say the phrase, it'll be something completely unlike what anyone was expecting. Like as his dying breath, he tells Black Panther not to let the team go away. "Make sure the Avengers assemble again" or something like that.

What's your thoughts?