Thou hast covered
cakak (saw-kak')
to entwine as a screen; by implication, to fence in, cover over, (figuratively) protect -- cover, defence, defend, hedge in, join together, set, shut up.
thyself with a cloud
`anan (aw-nawn')
a cloud (as covering the sky), i.e. the nimbus or thunder-cloud -- cloud(-y).
that our prayer
tphillah (tef-il-law')
intercession, supplication; by implication, a hymn -- prayer.
should not pass through
`abar (aw-bar')
to cross over; used very widely of any transition (literal or figurative; transitive, intransitive, intensive, causative); specifically, to cover (in copulation)