I did summer pioneering once near Glasgow...local cong asked us young pioneers to visit an older infirm women who was of the anointed.
We chatted, had tea and cakes and then she asked if it was ok if we studied the Watchtower with her.
Sure we said...thinking we would help her understand a tricky WT about Armageddon...
She breezed through the WT and every scripture we had to look up she just simply quoted...she knew them all.
I was in utter awe...this old women, in a wheelchair, physical body failing but my goodness her mind was sharp...that experience convinced me about "the anointed"...
Sadly I met another one who was so horribly cruel that he got disfellowshipped for slander...
I look back now and realize the elderly woman only had the WT to cling to and therefore soaked it up...