Let them not depart
luwz  (looz)
to turn aside, i.e. (literally) to depart, (figuratively) be perverse -- depart, froward, perverse(-ness).
from thine eyes
`ayin  (ah'-yin)
an eye; by analogy, a fountain (as the eye of the landscape)
keep
shamar  (shaw-mar')
to hedge about (as with thorns), i.e. guard; generally, to protect, attend to, etc.
them in the midst
tavek  (taw'-vek)
a bisection, i.e. (by implication) the centre -- among(-st), between, half, (there-,where-), in(-to), middle, mid(-night), midst (among), out (of), through, with(-in).
of thine heart
lebab  (lay-bawb')
the heart (as the most interior organ)


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