Just because you say it needs to happen, doesn’t mean it will happen.
If you give somebody an urgency, you better frame it in a way that makes sense to them or to the greater cause. Important is subjective, even when you are close, even when you work in the same team, even when there is a generic agreement on high level targets.
A sure way to inspire action is to build rapport first. Trust is what makes things important for a group of people. Not because somebody says it, but because we have a common understanding and we are in this together.
Just because it will happen, doesn’t mean you have changed their minds.
Of course, if you repeat that something is important enough times, people will eventually go ahead and merely do it. And next time you will have to ask again, repeat again, exhaust them again.
A sure way to inspire change is to sustain rapport. Dedicate time to it, expand it, nurture it, heal it, prioritize it, protect it. Not because somebody wants something, but because you care.