The object of preaching is to constantly remind mankind of what they keep forgetting; not to supply the intellect, but to fortify the feebleness of human resolutions.
Mourning is not forgetting... It is an undoing. Every minute tie has to be untied and something permanent and valuable recovered and assimilated from the dust.
Other than obvious errors like forgetting a line, often I can't see any difference between take one and take 20.