I have visited the site provided, and found nothing new or earth shaking, all these issues are covered multiple times in just about any debate room/board. . . I did take note of the fact that the author, though, blasted the KJV NT, used the KJV OT as the authoritative word, in place of the Hebrew text.
Second, if should be noted, that the KJV or any translation, and all (BUT THE ORIGINAL MANUSCRIPTS) versions are NOT the Totally Divinely Inspired Word of God.
Third, the author needs to understand the term "Stumbling Blocks" and the relevance if any as to why would use them in the NT and OT as well.
Fourth, one must understand that God works on faith, not sight, and will NEVER have man prove God "is" He knows He is God, He don't need man going around proving He is real to other men. God will do it, "if" and when He so chooses to do so, therefore one could NEVER HAVE the Perfect Word of God, if you had it, you would know there is a God, by sight, having His Holy Living Word, without , imperfections, blemish and infallible excellence and would repent for all the wrong reasons, not because you wanted Gods will be done, but just because you knew there was a God. Father won't have that!
Also note this . . . Romans 11:25 For I would not, brethren, that ye should be ignorant of this mystery, lest ye should be wise in your own conceits; that blindness in part is happened to Israel, until the fulness of the Gentiles be come in.
So of course if you are of "Jacob" you cannot understand it, till the second coming, that is. . . read all of chapter 11. . .
I don't expect the person that posted that url, will ever return, most like them, are not willing to debate matters, but rather, are more apt to spam and never show back up, but will leave this here for the benefit of others.
KingJehu