I watch
shaqad (shaw-kad')
to be alert, i.e. sleepless; hence to be on the lookout (whether for good or ill) -- hasten, remain, wake, watch (for).
and am as a sparrow
tsippowr (tsip-pore')
a little bird (as hopping) -- bird, fowl, sparrow.
alone
badad (baw-dad')
to divide, i.e. (reflex.) be solitary -- alone.
upon the house top
gag (gawg)
a roof; by analogy, the top of an altar -- roof (of the house), (house) top (of the house).