I will be glad
samach (saw-makh')
probably to brighten up, i.e. (figuratively) be (causatively, make) blithe or gleesome
and rejoice
`alats (aw-lats')
to jump for joy, i.e. exult -- be joyful, rejoice, triumph.
in thee I will sing praise
zamar (zaw-mar')
give praise, sing forth praises, psalms.
to thy name
shem (shame)
an appellation, as a mark or memorial of individuality; by implication honor, authority, character -- + base, (in-)fame(-ous), named(-d), renown, report.
O thou most High
'elyown (el-yone')
an elevation, i.e. (adj.) lofty (compar.); as title, the Supreme -- (Most, on) high(-er, -est), upper(-most).