Given the weakness of man, no matter how perfect his work, it remains incomplete, filled with errors and contradictions, so if we find errors in a word, we deduce that it is a word of man, and not of God, because the word of God must be perfect without any error or contradiction
This is evident and mentioned by Almighty Allah in:
﴿أَفَلا يَتَدَبَّرونَ القُرآنَ وَلَو كانَ مِن عِندِ غَيرِ اللَّهِ لَوَجَدوا فيهِ اختِلافًا كَثيرًا﴾ [النساء: ٨٢]
Then do they not reflect upon the Quran? If it had been from [any] other than Allah, they would have found within it much contradiction.
An-Nissa 82
When we apply the previous principle on the Bible we find many contradictions among which the contradiction between Jesus and Paul about the law of Moses, because we find that Jesus announces that he did not come to abolish it in:
Matthew 5:17 Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfil.
and it emphasizes the practice and teaching of the law by:
Matthew 5:18-19 For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled.
Whosoever therefore shall break one of these least commandments, and shall teach men so, he shall be called the least in the kingdom of heaven: but whosoever shall do and teach them, the same shall be called great in the kingdom of heaven.
On the other hand we find Paul declares the abolition of the law of Moses by:
Hebrews 7:18-19 For there is verily a disannulling of the commandment going before for the weakness and unprofitableness thereof.
For the law made nothing perfect, but the bringing in of a better hope did; by the which we draw nigh unto God.
And :
Hebrews 8:7 For if that first covenant had been faultless, then should no place have been sought for the second.
Hebrews 10:9 Then said he, Lo, I come to do thy will, O God. He taketh away the first, that he may establish the second.
So we are faced with a contradiction that proves that the Bible is not the word of Allah, because it is not conceivable that Allah abolishes and does not abolish at the same time
Dear reader, do not accept to be blind, the verses are in front of your eyes, and Allah has made you endowed with intelligence so that you distinguish between the true and the false, and not be among the people of Hell whom Allah has said about them:
﴿وَلَقَد ذَرَأنا لِجَهَنَّمَ كَثيرًا مِنَ الجِنِّ وَالإِنسِ لَهُم قُلوبٌ لا يَفقَهونَ بِها وَلَهُم أَعيُنٌ لا يُبصِرونَ بِها وَلَهُم آذانٌ لا يَسمَعونَ بِها أُولئِكَ كَالأَنعامِ بَل هُم أَضَلُّ أُولئِكَ هُمُ الغافِلونَ﴾ [الأعراف: ١٧٩]
And We have certainly created for Hell many of the jinn and mankind. They have hearts with which they do not understand, they have eyes with which they do not see, and they have ears with which they do not hear. Those are like livestock; rather, they are more astray. It is they who are the heedless
Al-Arraf 179