We must be careful of these people and what they teach and should avoid them.
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. As we said before, so say I now again, if any man preach any other gospel unto you than that ye have received, let him be accursed. Galatians 1:8-9.
I think Ecl was [pot-stirring by] quoting MacArthur out of context. MacArthur and his ministry, Grace To You, are completely Biblically founded afaik.