The grey head is a crown of glory, if it is seen in the way of righteousness.
~ Pr 16:31 (BBE)
The Bible talks a lot about respecting the elders of a given community. Age was deemed a sign of wisdom.
However, we see here that it is only a crown of glory if one has dealt righteously in their life. It has a caveat to the status. That is not sufficient grounds to disrespect an elder, but an elder who has acted foolishly in their lifetime can only expect so much.