Quand Nous leur envoyâmes deux [envoyés] et qu’ils les traitèrent de menteurs. Nous [les] renforçâmes alors par un troisième et ils dirent : "Vraiment, nous sommes envoyés à vous."
These readings amount to the same meaning. The first (form II) is denotes strengthening, and the second (form I) implies that Allah gave them the means to overcome their interlocuters [Makki].
He has revealed to you ˹O Prophet˺ the Book in truth, confirming what came before it, as He revealed the Torah and the Gospel
Explication
These readings amount to the same meaning. The first (form II) is denotes strengthening, and the second (form I) implies that Allah gave them the means to overcome their interlocuters [Makki].