That they were graven
chatsab (khaw-tsab')
to cut or carve (wood), stone or other material); by implication, to hew, split, square, quarry, engrave -- cut, dig, divide, grave, hew (out, -er), made, mason.
with an iron
barzel (bar-zel')
iron (as cutting); by extension, an iron implement -- (ax) head, iron.
pen
`et (ate)
a stylus or marking stick -- pen.
and lead
`owphereth (o-feh'-reth)
lead (from its dusty color) -- lead.
in the rock
tsuwr (tsoor)
a cliff (or sharp rock, as compressed); generally, a rock or boulder; figuratively, a refuge; also an edge (as precipitous)
for ever
`ad (ad)
a (peremptory) terminus, i.e. (by implication) duration, in the sense of advance or perpetuity (substantially as a noun, either with or without a preposition)