Is fallen asleep (kekoimētai). Perfect passive indicative of koimaō, old verb to put to sleep. Common as a metaphor for death like our cemetery.
I go (poreuomai). Futuristic use of the present tense as in Joh 14:2.
That I may awake him out of sleep (hina exupnisō auton). Purpose clause with hina and the first aorist active subjunctive of exupnizō, a late compound (ex, hupnos, sleep) for the older aphupnizō, here only in the N.T. See Job 14:12 where also it occurs along with koimaomai.