Surah Nahl ayat 104 Tafsir Quran 16:104

﴿إِنَّ الَّذِينَ لَا يُؤْمِنُونَ بِآيَاتِ اللَّهِ لَا يَهْدِيهِمُ اللَّهُ وَلَهُمْ عَذَابٌ أَلِيمٌ﴾
[ النحل: 104]

16:104 Indeed, those who do not believe in the verses of Allah - Allah will not guide them, and for them is a painful punishment.

Indeed those who do not believe in God’s signs — God shall not guide them and there is a painful chastisement for them.

Indeed, those who deny Allahs revelations shall not be blessed with Allahs guidance to His path of righteousness and must expect the torment which shall be laid upon the damned

الَّذِينَ لاَ يُؤْمِنُونَ بِآيَـتِ اللَّهِ ( Verily, those who do not believe in Allah's Ayat, ) Allah will not guide them, and theirs will be a painful punishment, meaning, the disbelievers and heretics who are known to the people as liars.
The Messenger Muhammad ﷺ, on the other hand, was the most honest and righteous of people, the most perfect in knowledge, deeds, faith and conviction.
He was known among his people for his truthfulness and no one among them had any doubts about that - to such an extent that they always addressed him as Al-Amin ( the Trustworthy ) Muhammad.
Thus when Heraclius, the king of the Romans, asked Abu Sufyan about the attributes of the Messenger of Allah ﷺ, one of the things he said to him was, "Did you ever accuse him of lying before he made his claim" Abu Sufyan said, "No".
Heraclius said, "He would refrain from lying about people and then go and fabricate lies about Allah"

الَّذِينَ لاَ يُؤْمِنُونَ بِآيَـتِ اللَّهِ ( Verily, those who do not believe in Allah's Ayat, ) Allah will not guide them, and theirs will be a painful punishment, meaning, the disbelievers and heretics who are known to the people as liars.
The Messenger Muhammad ﷺ, on the other hand, was the most honest and righteous of people, the most perfect in knowledge, deeds, faith and conviction.
He was known among his people for his truthfulness and no one among them had any doubts about that - to such an extent that they always addressed him as Al-Amin ( the Trustworthy ) Muhammad.
Thus when Heraclius, the king of the Romans, asked Abu Sufyan about the attributes of the Messenger of Allah ﷺ, one of the things he said to him was, "Did you ever accuse him of lying before he made his claim" Abu Sufyan said, "No".
Heraclius said, "He would refrain from lying about people and then go and fabricate lies about Allah"

( Lo! those who disbelieve the revelations of Allah ) i.e. Muhammad ( pbuh ) and the Qur’an, ( Allah guideth them not ) to His religion, i.e. He does not guide those who do not deserve to be guided; it is also said that this means: He does not guide them to the right proof nor save them from the Fire ( and theirs will be a painful doom ) a severe chastisement.

Verily! Those who believe not in the Ayat (proofs, evidences, verses, lessons, signs, revelations, etc.) of Allah, Allah will not guide them and theirs will be a painful torment.

Page 279 English transliteration