Mine eyes
`ayin (ah'-yin)
an eye; by analogy, a fountain (as the eye of the landscape)
prevent
qadam (kaw-dam')
to project (one self), i.e. precede; hence, to anticipate, hasten, meet (usually for help) -- come (go, (flee) before, + disappoint, meet, prevent.
the night watches
'ashmurah (ash-moo-raw')
a night watch -- watch.
that I might meditate
siyach (see'-akh)
to ponder, i.e. (by implication) converse (with oneself, and hence, aloud) or (transitively) utter -- commune, complain, declare, meditate, muse, pray, speak, talk (with).
in thy word
'imrah (im-raw')
commandment, speech, word.