Lo this we have searched
chaqar (khaw-kar')
to penetrate; hence, to examine intimately -- find out, (make) search (out), seek (out), sound, try.
it so it is hear
shama` (shaw-mah')
to hear intelligently (often with implication of attention, obedience, etc.; causatively, to tell, etc.)
it and know
yada` (yaw-dah')
to know (properly, to ascertain by seeing); used in a great variety of senses, figuratively, literally, euphemistically and inferentially
thou it for thy good