For he hath strengthened
chazaq (khaw-zak')
to fasten upon; hence, to seize, be strong (figuratively, courageous, causatively strengthen, cure, help, repair, fortify), obstinate; to bind, restrain, conquer
the bars
briyach (ber-ee'-akh)
a bolt -- bar, fugitive.
of thy gates
sha`ar (shah'-ar)
an opening, i.e. door or gate -- city, door, gate, port (-er).
he hath blessed
barak (baw-rak')
to kneel; by implication to bless God (as an act of adoration), and (vice-versa) man (as a benefit); also (by euphemism) to curse (God or the king, as treason)
thy children
ben (bane)
a son (as a builder of the family name), in the widest sense (of literal and figurative relationship, including grandson, subject, nation, quality or condition, etc.
within
qereb (keh'-reb)
the nearest part, i.e. the center, whether literal, figurative or adverbial (especially with preposition)
thee