{Shall dash to the ground} (edaphiousin). Attic future of
edaphiz(935c), to beat level, to raze to the ground, a rare verb
from edaphos, bottom, base, ground ( Ac 22:7 ), here alone in
the N.T. {Because} (anth' h(936e)). "In return for which things."
{Thou knewest not} (ouk egn(9373)). Applying the very words of the
lament in the condition in verse  42 . This vivid prophecy of the
destruction of Jerusalem is used by those who deny predictive
prophecy even for Jesus as proof that Luke wrote the Gospel after
the destruction of Jerusalem. But it is no proof at all to those
who concede to Jesus adequate knowledge of his mission and
claims.