You mean he had to have siblings? Also his mother was married.
Who was the Blessed Mother married to at the time of Jesus’ death?
He obviously and clearly didn't have siblings and the comment to which I responded is just an example of people who try to have it both ways and hope no one will notice. If Christ obeyed the Old Testament Law then he had no siblings which is something people who make the argument about Christ obeying all Old Testament Law like to ignore when they make their silly arguments based on their refusal to accept Scripture.
The sacrificial lamb is what is in question and Christ, being that lamb, is different than a mere human being in that He is God in addition to His human form.
Apparently denying the perfection of the Holy Spirit leads Protestants to totally disregarding the fact that Christ is God when they feel like considering Christ as a man only which is far, far, more often than they consider Him to be God incarnate.
All Protestant and Protestant derived doctrine relies ultimately on Self and Self Alone which without fail leads people to considering either the human aspect of Christ or the Holy aspect as if they're seperate when the individual interpreter of Scripture wants them to be and joined when the individual interpreter wants them to be.
People say Christ kept all the Old Testament law but does that mean Scripture is wrong and Christ actually stoned the woman caught in adultry to death? No, of course not. Nor does it mean that Christ violated OT laws other than when it was important to His showing that He was God incarnate just like when He forgave the woman and just like when He said, This is my body to show that partaking of His flesh and blood was unique in spite of His doing so driving away His followers who could only accept Him as Christ if He fit their preconceptions.
Enjoy preconceptions all you like, they clearly do not do justice to Christ being God incarnate but for people who insist the Holy Spirit is imperfect I guess that's not too big a deal.