The two readings convey the same meaning, but in Ibn ʿĀmir’s reading the verb yakūn is subjunctive as a consequence for the imperative ‘Be’ [see al-Samin al-Halabi].
He has revealed to you ˹O Prophet˺ the Book in truth, confirming what came before it, as He revealed the Torah and the Gospel
Explanation
The two readings convey the same meaning, but in Ibn ʿĀmir’s reading the verb yakūn is subjunctive as a consequence for the imperative ‘Be’ [see al-Samin al-Halabi].