مَا قَدَرُوا اللَّهَ حَقَّ قَدْرِهِ
...
They have not regarded Allah with His rightful esteem.
meaning, they have not recognized the might and power of Allah when they worship alongside Him those who cannot even ward off a fly, because they are so weak and incapable.
...
إِنَّ اللَّهَ لَقَوِيٌّ عَزِيزٌ
Verily, Allah is All-Strong, All-Mighty.
means, He is the All-Strong Who, by His might and power, created all things.
وَهُوَ الَّذِى يَبْدَأُ الْخَلْقَ ثُمَّ يُعِيدُهُ وَهُوَ أَهْوَنُ عَلَيْهِ
And He it is Who originates the creation, then He will repeat it; and this is easier for Him. (30:27)
إِنَّ بَطْشَ رَبِّكَ لَشَدِيدٌ إِنَّهُ هُوَ يُبْدِىءُ وَيُعِيدُ
Verily, the punishment of your Lord is severe and painful. Verily, He it is Who begins and repeats. (85:12-13)
إِنَّ اللَّهَ هُوَ الرَّزَّاقُ ذُو الْقُوَّةِ الْمَتِينُ
Verily, Allah is the Provider, Owner of power, the Most Strong. (51:58)
عَزِيزٌ
(All-Mighty),
means, He has subjugated and subdued all things, and there is none that can resist Him or overcome His might and power, and He is the One, the Subduer.