In this reading, Allah speaks of His action (i.e. decree fulfilled by the angel) with the first-person majestic plural, along with the subsequent verb "We gather".
وضاحت
These readings amount to the same meaning [al-Mahdawi].
He has revealed to you ˹O Prophet˺ the Book in truth, confirming what came before it, as He revealed the Torah and the Gospel
وضاحت
These readings amount to the same meaning [al-Mahdawi].