All Christians through baptism are preachers of the Word. Saint Paul says, “all of us who possess the first fruits of the Spirit, we too groan inwardly as we wait for our bodies to be set free.” What he is saying is that everything we do, everything we think and say belongs to Christ and through us He communicates to the world.
When we sow the seed of the Word, we rarely see the effects of that sowing. We can look back on our own lives and remember people who affected us and yet they will never know how much they changed us; old teachers, our parents, priests, former classmates, coworkers. We too have an effect on people’s lives without knowing it.