We see
ra'ah (raw-aw')
to see, literally or figuratively (in numerous applications, direct and implied, transitive, intransitive and causative)surely, think, view, visions.
not our signs
'owth (oth)
a signal, as a flag, beacon, monument, omen, prodigy, evidence, etc. -- mark, miracle, (en-)sign, token.
there is no more any prophet
nabiy' (naw-bee')
a prophet or (generally) inspired man -- prophecy, that prophesy, prophet.
neither is there among us any that knoweth
yada` (yaw-dah')
to know (properly, to ascertain by seeing); used in a great variety of senses, figuratively, literally, euphemistically and inferentially
how long
`ad (ad)
especially with a preposition); as far (or long, or much) as, whether of space (even unto) or time (during, while, until) or degree (equally with)