That he was sick (hoti asthenei). Present active indicative retained in indirect discourse after a secondary tense (ēkousen).
Two days (duo hēmeras). Accusative of extent of time.
In the place where he was (en hōi ēn topōi). Incorporation of the antecedent topōi into the relative clause, “in which place he was.” It was long enough for Lazarus to die and seemed unlike Jesus to the sisters.