Historically, the wife of Imran became pregnant. Consequently, she made a heartfelt vow to Allah. That is why she  dedicated the child in her womb to His service. Thierefore, ths act of devotion demonstrates her sincere faith. Inaddition, she desired to contribute to the worship of Allah.

Allah narrates her words in the Quran:
“إِذْ قَالَتِ ٱمْرَأَتُ عِمْرَٰنَ رَبِّ إِنِّى نَذَرْتُ لَكَ مَا فِى بَطْنِى مُحَرَّرًا فَتَقَبَّلْ مِنِّىٓ ۖ إِنَّكَ أَنتَ ٱلسَّمِيعُ ٱلْعَلِيمُ”
(Surah Aal Imran: 35)

In fact, she hoped her child would be a boy. This was because it was customary at the time for boys to serve in the temple. However, when she gave birth, she found it was a girl.

She said in surprise:
“فَلَمَّا وَضَعَتْهَا قَالَتْ رَبِّ إِنِّى وَضَعْتُهَآ أُنثَىٰ وَٱللَّهُ أَعْلَمُ بِمَا وَضَعَتْ وَلَيْسَ ٱلذَّكَرُ كَٱلْأُنثَىٰ ۖ وَإِنِّى سَمَّيْتُهَا مَرْيَمَ وَإِنِّىٓ أُعِيذُهَا بِكَ وَذُرِّيَّتَهَا مِنَ ٱلشَّيْطَٰنِ ٱلرَّجِيمِ”
(Surah Aal Imran: 36)

Despite her initial expectations, the wife of Imran entrusted her daughter, Maryam, to Allah’s care. Truly, this trust and acceptance reflect her unwavering faith