بسم الله الرحمن الرحيم
The list could fill a few volumes.
However, I think there’s one lecture that really summarises why we need this great month.
It’s by Brother Abu Uwais (rahimahullah).
I posted it last year along with its transcript.
The brother’s words are something to ponder over, may Allah reward him.
PS. It would also be good if each of us asked ourselves why WE need a Ramadan. What problems do each of us have and how will Ramadan help us to rectify ourselves?