YOu guys, as I suspected, are completely missing the point. As a result of Mac's speaking for Hayford, the charismatic group thought he was one of them. Mac sent a message, unwittingly. If the charismatic group hadn't invited him to lunch, they would still think he agreed with them.
To say "anywhere I can preach with no limitations" is dangerous because it sends a message. And that is what we need to be careful about. God commanded separation for a reason. Contrary to DD's assertion, this is completely with NT merit. Romans 16:17-18 among a host of other passages instructs us about how to deal with these matters. God said "Have nothing to do with them." He did not say "Go preach for them."
When you join hands with disobedient brethren, you are complicit in their disobedience. If you go to confront them about their position (such as Kevin Bauder did at Beeson Divinity School), then I have no problem with that. But, by Mac's own testimony, that is not what he did and by the reaction of the charismatic group, that is not what he accomplished. To his credit, he did confront the charismatic group.
IMO, when you are invited to speak somewhere, it is only ethical not to blindside them with opposing views unless you are asked to do so. You don't go to a Catholic church and preach about biblical salvation unless they know you are going to do that. You don't go to a presbyterian church and preach about the pretribulation rapture unless they know you are going to do that. Mac didn't go to the Church on the Way to preach about the errors of Charismatism. He should have. Then I would be fine with it. But he didn't do that.
Siegfried, As for accreditation, you are comparing apples and oranges. These things are so entirely dissimilar, your topic needs a new thread. School accreditation in a broad group of schools about accomplishing self set objectives is completely different than taking the pulpit of a disobedient brother, or an unbeliever. Dr. Bob III spoke at Furman University recently, a move that I was pleased to see. He was not endorsing them or their position. He was offering a perspective of his school. In other words, he was asked to present "an opposing viewpoint."
I simply think this is an area where MacArthur is inconsistent. He sends a wrong message. Go preach at the church on teh Way but do so in such a way that no one is confused about where you stand.
BTW, I didn't say Mac endorsed Hayford. I said he sent a mixed message. These things need more thought than they are typically given. We send mixed messages way to often and undiscerning people do not pick up on the fine nuacnes we think are making.