Douger, here is the Hebrew word used in the verse you cited where the crowd wanted to "know" the angels inside. (And of course the crowd didn't know they were Angels...or who they were...that was why the crowd was demanding to "know" who they were. Now, can you find any sexual connotation in any of its uses? Can you find uses that may be in line with "wicked" actions?
3045. yada' (yaw-dah') 3046[wash my mouth]>>A primitive root; to know (properly, to ascertain by seeing); used in a great variety of senses, figuratively, literally, euphemistically and inferentially (including observation, care, recognition; and causatively, instruction, designation, punishment, etc.) (as follow) -- acknowledge, acquaintance(-ted with), advise, answer, appoint, assuredly, be aware, (un-)awares, can(-not), certainly, comprehend, consider, X could they, cunning, declare, be diligent, (can, cause to) discern, discover, endued with, familiar friend, famous, feel, can have, be (ig-)norant, instruct, kinsfolk, kinsman, (cause to let, make) know, (come to give, have, take) knowledge, have (knowledge), (be, make, make to be, make self) known, + be learned, + lie by man, mark, perceive, privy to, X prognosticator, regard, have respect, skilful, shew, can (man of) skill, be sure, of a surety, teach, (can) tell, understand, have (understanding), X will be, wist, wit, wot.