Translation of the verse 30 from Surah Muhammad : Number of verses 38 - - page 510 - Part 26.
Had We willed, We could have shown them to you, and you should have known them by their marks, but surely, you will know them by the tone of their speech! And Allah knows all your deeds.
And if We willed, We could show them to you, and you would know them by their mark; but you will surely know them by the tone of [their] speech. And Allah knows your deeds.
(47:30) If We were to so will, We could have shown them to you so that you would recognise them by their faces, and you would certainly know them by the manner of their speech. Allah knows all your deeds.