Mk 1:40-45 Then he said to him, “See that you tell no one anything, but go, show yourself to the priest and offer for your cleansing what Moses prescribed
"do not let your left hand know what your right hand is doing" Mt 6:3
So, how do we know. How do we know when we are to " proclaim upon the housetops" Mt 10:27 OR to "tell no one anything"?
Simple, "What I tell you". When our hearts are open to the Lord, when our spirit is docile, we will hear the prompting of the Lord. We will know if what we have been told is for us/private, or if He desires the words for another.
Always be ready, with the enthusiasm of the healed leper, to proclaim His word. Ask first, pray, Lord thy will be done, and follow the lead of the Holy Spirit.
You are God, i am not.
St. Anthony of Egypt, pray for us