Asking to be trusted is never the way to gain it. It must be earned, often without words. Words can deceive and lead to mistrust when one’s “word” is broken. Too often oratory is impressive, except to those who also look for follow-through and action.
Saying is never a replacement for doing. I knew a man who attempting a gain a reputation based on what he planned to do. He even predicted the effect he would have when the plans were carried out. I saw none of the effect, and soon I no longer saw him. I believe he left town. Speaking along with doing teaches that both must go together, and is effective. If we must eliminate one, I would eliminate speaking. Don’t actions speak louder than words?
So, if you speak, act as quickly as possible so the two will be connected. If you don’t plan to take any action, keep quiet.