Behold I have longed
ta'ab (taw-ab')
to desire -- long.
after thy precepts
piqquwd (pik-kood')
appointed, i.e. a mandate (of God; plural only, collectively, for the Law) -- commandment, precept, statute.
quicken
chayah (khaw-yaw')
to live, whether literally or figuratively; causatively, to revive
me in thy righteousness
tsdaqah (tsed-aw-kaw')
rightness (abstractly), subjectively (rectitude), objectively (justice), morally (virtue) or figuratively (prosperity) -- justice, moderately, right(-eous) (act, -ly, -ness).