How the Disbelievers mocked the Messenger
Allah tells us how the disbelievers mocked the Messenger when they saw him. This is like the Ayah,
﴿ وَإِذَا رَءَاكَ ٱلَّذِينَ ڪَفَرُوٓاْ إِن يَتَّخِذُونَكَ إِلَّا هُزُوًا ﴾
(And when the disbelievers see you, they take you not except for mockery) (21:36), which means that they tried to find faults and shortcomings in him. Here Allah says:
﴿ وَإِذَا رَأَوۡكَ إِن يَتَّخِذُونَكَ إِلَّا هُزُوًا أَهَـٰذَا ٱلَّذِى بَعَثَ ٱللَّهُ رَسُولاً ﴾
(And when they see you, they treat you only in mockery (saying): "Is this the one whom Allah has sent as a Messenger'') i.e., they said this by way of belittling and trying to undermine him, so Allah put them in their place, and said:
﴿ وَلَقَدِ ٱسۡتُہۡزِئَ بِرُسُلٍ۬ مِّن قَبۡلِكَ ﴾
(And indeed Messengers before you were mocked at) (6:10)
﴿ إِن ڪَادَ لَيُضِلُّنَا عَنۡ ءَالِهَتِنَا ﴾
(He would have nearly misled us from our gods,) They meant: `he nearly turned us away from worshipping idols, and he would have done so, had we not been patient and persevered in our ways.' So Allah said, warning and threatening them:
﴿ وَسَوۡفَ يَعۡلَمُونَ حِينَ يَرَوۡنَ ٱلۡعَذَابَ ﴾
(And they will know, when they see the torment...)