But I understand that they will not survive in the ministry if they drift into it. They will rarely have the commitment to stick it out if they are in the ministry because their father was a preacher, or because they had a neat youth group, or because they respect a particular pastor, or because they think it's a soft job with six days a week off. But I also understand that it may take some time for them to nail down their call. I don't insist that they bear witness to a heavenly voice. Like Wesley dealing with his preachers concerning sanctification, I am content if they are continually seeking God's will.
Seekers usually find.
So I push them to seek. And I seek with them. But they must know. That does not necessarily mean that they have a heavenly vision like Isaiah or Ezekiel. But eventually they must know.