strong habitation = rock of habitation. Hebrew. zur, a fortified place. Some codices, with six early printed editions, Aramaean, Septuagint, and Vulgate, read "a rock of refuge".
whereunto I may continually resort, &c. Septuagint reads "a place of security to save me".
rock. Hebrew. sela'. See note on Psa_18:1, Psa_18:2. Exo_17:6. Deu_32:13.