Divine omnipotence and capability

وَقَالُوا۟ لَوْلَا نُزِّلَ عَلَيْهِ ءَايَةٌ مِّن رَّبِّهِۦ ۚ قُلْ إِنَّ ٱللَّهَ قَادِرٌ عَلَىٰٓ أَن يُنَزِّلَ ءَايَةً وَلَـٰكِنَّ أَكْثَرَهُمْ لَا يَعْلَمُونَ

And they say, "Why has a sign not been sent down to him from his Lord?" Say, "Indeed, Allāh is Able to send down a sign, but most of them do not know."

أَفَعَيِينَا بِٱلْخَلْقِ ٱلْأَوَّلِ ۚ بَلْ هُمْ فِى لَبْسٍ مِّنْ خَلْقٍ جَدِيدٍ

Did We fail in the first creation? But they are in confusion over a new creation.