Evangelism is a command from Christ our Lord to everyone who professes Christian faith. It is not a duty within the offices of pastors, preachers and teachers alone.
Some 400 years ago, everyone was assumed Christian, as long as they were brought up in the Western culture or baptized when they were babies.
Now, people were assumed Christians, as long as they stay in the church services or attend/support church activities.
Where is the preaching of the Gospel? Where is the study of God's word? Where is the true conversion from a cursed sinner to a sanctified saint?