Cry peace. Proclaim my words. Invite those who will repent to be baptized and forgiven, and they shall obtain my Spirit to guide them.
A&C page 9
These are things we're supposed to do. We are to proclaim the Lord's words. I don't think this always has to be verbal. Our example, and actions often speak louder anyway. But a few verses later it says to open our mouths. So it’s on the person to have the Spirit to put the right words at the right time to the right audience.
We are to cry peace. The Lord's words bring peace to those who follow them. That's why we are to cry peace. Cry implies heartfelt petition. Doesn't say "mutter" peace or scream it, or smother people with it. Says to "cry" peace. Cry implies humility, meekness, and an absence of control, coercion and fear.