A.T. Robertson Commentary Galatians 1:9

"As we have said before, so say I now again, if any man preacheth unto you any gospel other than that which ye received, let him be anathema." — Galatians 1:9 (ASV)

So say I now again (κα αρτ παλιν λεγω). Paul knows that he has just made what some will consider an extreme statement. But it is a deliberate one and not mere excitement. He will stand by it to the end. He calls down a curse on any one who proclaims a gospel to them contrary to that which they had received from him.