Paul does not hesitate to speak against such. The unrevoked anathema of God rests upon such preaching.
"But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed, Gal. 1:8.
I realize, of course, there is a possibility that someone whose intentions are good, through carelessness or ignorance, may make some fatal error in presenting God's truth.
We see this again and again in modern Christianity. How burdened our hearts become as we hear preachers and teachers who have not given themselves to knowing God's word nor yielded themselves to the Holy Spirit.
Who's revelation of Christ in them is imperative to truth.
We see, as never before, laziness and unconcern among those who deliver the priceless truth of the Gospel.
It does take painstaking learning, effort, and desire to sufficiently understand what God says in His word to make it known to others. It is for this reason that the Father is raising up a force of people in these last days who have given them selves to wilderness experiences, to training by the Spirit, and to a long period of waiting upon God to know him. These will go forth bearing the precious seed and causing many to know Christ as their life and to come into union with Him.