Tirade
Tirade , noun
[French, from Italian tirada, properly, a pulling; hence, a lengthening out, a long speech, a tirade, from tirare to draw; of Teutonic origin, and akin to English tear to redn. See Tear to rend, and compare Tire to tear.]
A declamatory strain or flight of censure or abuse; a rambling invective; an oration or harangue abounding in censorious and bitter language.
Here he delivers a violent tirade against persons who profess to know anything about angels.