Surah Al-Baqarah, Ayah 100
Quran 2:100 · The Cow · Madani · Para 1 · Page 15
اَوَكُلَّمَا عٰهَدُوْا عَهْدًا نَّبَذَهٗ فَرِیْقٌ مِّنْهُمْ ؕ بَلْ اَكْثَرُهُمْ لَا یُؤْمِنُوْنَ ۟
Transliteration
Awa kullama AAahadoo AAahdannabathahu fareequn minhum bal aktharuhum layu/minoon
Saheeh International
Is it not [true] that every time they took a covenant a party of them threw it away? But, [in fact], most of them do not believe.
Al-Mukhtasar fi Tafsir
Due to their corrupt state, a group of the Jews would always break any commitment that they made, including the duty to have faith in what the Torah revealed about the prophethood of Muhammad (peace be upon him). Most of them do not really have faith in what Allah revealed, because faith leads to keeping to and honouring commitments and promises.
Tafsir Ibn Kathir (abridged)
Explains 2:99–2:103 together — read it on 2:99