Surah Al Furqan Tafseer

فَقَدْ كَذَّبُوكُم بِمَا تَقُولُونَ

Thus they will deny you because of what you say;

meaning, `those whom you used to worship besides Allah will show you to be liars in your claims that they were your helpers and protectors bringing you closer to Allah.'

This is like the Ayat:

وَمَنْ أَضَلُّ مِمَّن يَدْعُو مِن دُونِ اللَّهِ مَن لاَّ يَسْتَجِيبُ لَهُ إِلَى يَوْمِ الْقِيَـمَةِ وَهُمْ عَن دُعَأيِهِمْ غَـفِلُونَ

وَإِذَا حُشِرَ النَّاسُ كَانُواْ لَهُمْ أَعْدَاءً وَكَانُواْ بِعِبَادَتِهِمْ كَـفِرِينَ

And who is more astray than one who calls on besides Allah, such as will not answer him till the Day of Resurrection, and who are unaware of their calls to them. And when mankinds are gathered, they will become their enemies and will deny their worshipping. (46:5-6)

فَمَا تَسْتَطِيعُونَ صَرْفًا وَلَا نَصْرًا

then you can neither avert nor find help.

means:they will not be able to avert the punishment from themselves, nor will they be able to help themselves.

وَمَن يَظْلِم مِّنكُمْ

And whoever among you does wrong,

means by associating others in worship with Allah,

نُذِقْهُ عَذَابًا كَبِيرًا

We shall make him taste a great torment