Albert Barnes Commentary John 10:26

"But ye believe not, because ye are not of my sheep." — John 10:26 (ASV)

Are not of my sheep. Are not my people, my followers. You do not possess the spirit of meek and humble disciples. Were it not for pride, prejudice, and vainglory—for your false notions of the Messiah, and from a determination not to believe—you would have learned from my declarations and works that I am the Christ.

As I said unto you. Compare to John 8:47.