Translation for 28:53

وَإِذَا يُتۡلَىٰ عَلَيۡهِمۡ قَالُوٓاْ ءَامَنَّا بِهِۦٓ إِنَّهُ ٱلۡحَقُّ مِن رَّبِّنَآ إِنَّا كُنَّا مِن قَبۡلِهِۦ مُسۡلِمِينَ ٥٣
When it is recited to them, they declare, “We believe in it. This is definitely the truth from our Lord. We had already submitted1 ˹even˺ before this.”

Foot notes

222331
lit., ‘We had already been Muslims.’