قَالَ كَذَٰلِكِ قَالَ رَبُّكِ هُوَ عَلَيَّ هَيِّنٞۖ وَلِنَجۡعَلَهُۥٓ ءَايَةٗ لِّلنَّاسِ وَرَحۡمَةٗ مِّنَّاۚ وَكَانَ أَمۡرٗا مَّقۡضِيّٗا ٢١
He said, "Thus [it will be]; your Lord says, 'It is easy for Me, and We will make him a sign to the people and a mercy from Us. And it is a matter [already] decreed.'"
Translation: Saheeh International (English)
Each word's meaning and sound
Gabriel said to her: “The matter is as you said, namely that no husband or anyone else has touched you nor are you an adulteress. However, your Lord said: ‘To create a child without a father is easy for Me. And it is so that the child granted to you is a sign for people of the power of Allah, and a mercy from Me to them, due to the good they will achieve through him. And the creation of this child of yours is a fixed decree from Allah and written in the Preserved Tablet’.
Al-Mukhtasar in interpreting the Noble Quran