I recently spoke to honour the memory of Ezra Witkin z"l, a childhood friend who passed away from cancer at sixteen. His family commemorates his yahrzeit with an annual Torah lecture. His 27th yahrzeit was 2 weeks ago.
I spoke on the topic of suffering - both in relation to Ezra's courage in the face of illness, and to the suffering that we are all facing during this difficult time.
Please watch the video below. The shiur begins at 26:42.