3:45 when the Malaika/angels (plural) said, "O Maryam, indeed Allah gives you good tidings of a word from Him, whose name will be the Messiah, Isa, the son of Maryam, distinguished in this world and the Hereafter and among those brought near
If you happen to read the above verse 3:45 onwards, you would roughly understand that Malika MessengerS(plural) have visited Maryam and they have given glad tidings of a boy and how he will be in the future prior to the visit of RUH Messenger (singular) i.e. Gibreal 19:19 in the form of a human being to accomplish what was promised by previous Messengers of Allah (Malaika) who visited Maryam with glad tidings. This time (19:19) it is not to give glad tidings again but to grant it and thus make the promise come true... Glad tidings were given to Ibrahim or Zakariya of a child but not came Ruh to make it accomplished...
Let's read the verses..
19:17 "..... Then We sent to her Our Ruh, and he represented himself to her as a well-proportioned man."
19:18 She said, "Indeed, I seek refuge in the Most Merciful from you if you should be conscious."
19:19 He said, "I am only a messenger of your Lord to grant you a pure boy."
19:20 She said, "How can I have a boy while no man has touched me and I have not been unchaste?"
19:21 He said: Like that; your Lord says: It is easy to Me: and that We may make him a SIGN to men and a mercy from Us, and it is a matter which has been decreed.
19:22 So she conceived him, and she withdrew with him to a remote place.
If you carefully read there is no husband involved here... Gibreal came with a purpose to be accomplished... Maryam got afraid and sought refuge in Ar Rahman, and immediately Gibreal confirmed he was a messenger of Allah and presented the reason for his visit to her.. And the reason was to GRANT/GIVE her a pure boy..
And Maryam, unfortunately, repeated the same question that she said to those previous Malaika Messengers when they visited her with a message of Glad tidings of a boy first time (3:47) i.e. How can I have a son... and she added desperately that she was neither UNCHASTE ... Why should she confirm all possible ways a child can be born to a woman.. reflect.. Then read 19:21 .. Indeed Isa was a sign to people... Human being cannot be a sign unless he possessed something supernatural..
After stating BE and IT IS, Allah states So She conceived/carried him...
For me, all these conspicuous verses are more than enough to claim and stay in my stance... And I am not the one leaning to Christian cultures by claiming Joseph is the father of Isa but who says so.. Thank you..