So why does it matter whether Christ descended Ham? The importance of Christ's lineage centers on the fulfillment of prophesy in proving whether Christ was the Messiah! In this series of articles, you will see that some argue that Rahab, the Caananite harlot, was in the seedline of Christ! This of course is preposterous (see Rahab) because if Christ descended from a Caananite, He could not have been the Messiah. It was prophesied that the Messiah would descend from the root of Jesse, not Ham (see Isaiah 11:10). If Christ had descended from a Caananite, He would not have fulfilled the prophesy and thus they will say He was not the Christ.
Finally, if Hamath is not of the House of Ham, then Hamath's descendents, in particular the Kenites (sons of Cain), could claim to be caucasian rather than part negroid. But, if the Kenites mixed in with the descendants of Ham, this would make them part negroid since it is commonly believed that the Caananites were dark and/or negroid. Therefore, it is important to first determine whether Hamath is of Ham and then determine whether Rahab is in the lineage of Christ in order to refute the heretical claim of Christ's illegitimacy and that the Kenites were caucasian.