Maryam with Al-Masih before the People, Their Rejection of Her and His Reply to Them
Allah, the Exalted, informs of Maryam's situation when she was commanded to fast that day and not to speak to any human being. For verily, her affair would be taken care of and her proof would be established. Thus, she accepted the command of Allah and she readily received His decree. She took her child and brought him to her people, carrying him. When they saw her like this they made a big deal about her situation and they sternly protested against of it, and
قَالُواْ يمَرْيَمُ لَقَدْ جِئْتِ شَيْئاً فَرِيّاً
(They said: "O Mary! Indeed you have brought a thing Fariy.") Fariy means a mighty thing. This was said by Mujahid, Qatadah, As-Suddi and others. Ibn Abi Hatim reported from Nawf Al-Bikali that he said, "Her people went out searching for her, she was from a family that was blessed with prophethood and nobility. However, they could not find any trace of her. They came across a cow herder and they asked him, `Have you seen a girl whose description is such and such' He replied, `No, but tonight I saw my cows doing something that I've never seen them do before.' They asked, `What did you see' He said, `Tonight I saw them prostrating in the direction of that valley."' `Abdullah bin Ziyad said (adding to the narration), "I memorized from Sayyar that he (the cattle herder) said, `I saw a radiant light.' " So they went towards the direction that he told him, and Maryam was coming towards them from that direction. When she saw them she sat down and she was holding her child in her lap. They came towards her until they were standing over her.
يَا أُخْتَ هَارُونَ (0 sister of Harun - 19:28). Sayyidna Harun (علیہ السلام) ، who was the brother and companion of Sayyidna Musa (علیہ السلام) had died centuries before Sayyidah Maryam (علیہا السلام) time. It is obvious, therefore, that in verse 28 where Sayyidah Maryam (علیہا السلام) is addressed as the sister of Sayyidna Harun (علیہ السلام) cannot be in its literal sense. This is also corroborated by the incident that when The Holy Prophet ﷺ sent Sayyidna Mughirah Ibn Shu'bah ؓ as his ambassador to the people of Najran they questioned him that in the Qur’ an Sayyidah Maryam (علیہا السلام) has been referred to as the sister of Sayyidna Harun (علیہ السلام) whereas he had died long before her. Sayyidna Mughirah ؓ did not know the answer to this question. So, when he returned from the mission, he narrated the whole incident to The Holy Prophet ﷺ . On this The Holy Prophet ﷺ said why did you not tell them that it has been a common practice with the believers to adopt the names of the prophets in expectation of receiving their Barakah (blessings), and to claim relationship with them. (Ahmad, Muslim, Tirmidhi, Nasa'i)
This saying of the Prophet ﷺ may be interpreted in two ways. One, that Sayyidah Maryam's (علیہا السلام) relationship with Sayyidna Harun (علیہ السلام) was mentioned because she was of his lineage, and it was customary with the Arabs to associate a person with their ancestors, for instance a man belonging to the tribe of Tamim would be called as Akha Tamim or Tamini's brother, or an Arab would be addressed as Akha Arab. The other meaning is that the name Harun does not refer to Sayyidna Harun (علیہ السلام) the companion / brother of Sayyidna Musa (علیہ السلام) but to the brother of Sayyidah Maryam (علیہا السلام) herself who was also named after Sayyidna Harun (علیہ السلام) out of reverence for the Prophet. In the second case the term Harun اُختَ ھَارُون (Sister of Harun) fits in very well with the literal meaning of the word اُخت (Sister).
مَا كَانَ أَبُوكِ امْرَأَ سَوْءٍ
"Neither your father was a man of evil." - 19:28.
These words suggest that when someone who is descended from' righteous and pious ancestors commits a sin, then the sin is of greater magnitude compared to a sin committed by an ordinary person, because the sin brings bad name to the pious elders. It is for this reason that descendants of pious persons should make extra effort in the performance of righteous deeds, and fear Allah at all times.
Tazkirul Quran
Maulana Wahiduddin KhanOn ayahs 28–32
Mary gained confidence on hearing the words of the angel. She took the child and returned to her family. Seeing her in this condition, the Jewish people started condemning and scolding her. Maryam did as the angel had told her. She remained silent and pointed towards the child, meaning that this was not an ordinary type of child and in order to have proof thereof, they should talk to him and he, in spite of being an infant, would understand what they said and give a clear reply.
Uthmani text of the Madinah mushaf (King Fahd Complex). Translation: Saheeh International. Tafsir via Quran.com.