So, you believe that Jesus's brothers Joseph, Simon, James, Judas (Jude/Thaddeus), and unnamed sisters in Matt. 13:55-56/Mk. 6:3-4 were His half-siblings. However, they're not called
"siblings," nor
"half-siblings," but rather His
"ἀδελφοί" (adelphoi;brothers) and
"αδελφαι" (adelphai;sisters). These Koine Greek words have the following definitions: "fellow-countryman," "disciple/follower," "one of the same faith," and "kinsman/kinswoman, or relative," etc.
The context of Matt. 13:55-56/Mk. 6:3-4 shows the definition "
kinsman/kinswoman, or relative," e.g., sibling, cousin, nephew, niece, uncle, or aunt, etc., and information needed to determine the type of family members that apply here is lacking in those same verses.
You
assume Joseph, Simon, James, Judas (Jude/Thaddeus) were Jesus's half-siblings, but you haven't provided evidence to support that (post #3 gives you the opportunity to do so), whereas I actually provided evidence to show they were His cousins.