For thy lovingkindness
checed  (kheh'-sed)
kindness; by implication (towards God) piety: rarely (by opposition) reproof, or (subject.) beauty
is before mine eyes
`ayin  (ah'-yin)
an eye; by analogy, a fountain (as the eye of the landscape)
and I have walked
halak  (haw-lak')
to walk (in a great variety of applications, literally and figuratively)
in thy truth
'emeth  (eh'-meth)
stability; (figuratively) certainty, truth, trustworthiness -- assured(-ly), establishment, faithful, right, sure, true (-ly, -th), verity.