pilgrim,

No clarification is needed. MacArthur stated, "The 'incarnational sonship' view, while admittedly a minority opinion, is by no means rank heresy."

Of course, incarnational sonship is rank heresy. It is also blasphemy and idolatry. It is worshipping a false Christ who saves no one. Those who deny the Christ begotten of the Father before the worlds shall perish everlastingly.

The clarification needed is whether the Reformed agree with scripture and the Ecumenical Creeds or with MacArthur.