Alma 5

At the conclusion of Alma's remarks to the people of Zarahemla, he provides what I think great counsel -

"I speak by way of command unto you that belong to the church; and unto those who do not belong to the church I speak by way of invitation, saying: Come and be baptized unto repentance, that ye also may be partakers of the fruit of the tree of life."  (Book of Mormon | Alma 5:62)

I find it interesting that we should speak unto what I consider the active members of the Church by way of commandment.  But to those that are not members or in my mind, less active, we should speak by way of invitation.