Thou shalt increase my greatness, and comfort me on every side.
Thou shalt increase my greatness - even to a greater height than it attained before. The Septuagint, Vulgate, Ethiopic, and Arabic translate, 'thy' instead of "my." So Hengstenberg understands it, 'Thou shalt multiply my great deeds' - i:e., the great deeds wrought by thee for me. Compare Psalms 71:19, end; Psalms 145:3; Psalms 40:5; and David's words, 2 Samuel 7:23, "God went ... to do for you great things." But the Chaldaic and Syriac support the English version. So the greatness of the Antitype, Messiah, was increased after His sufferings (Luke 24:26; Philippians 2:8-9).
And comfort me on every side - literally, 'Thou shalt surround ... thou shalt comfort me.' The old versions and the most weighty authorities translate х ticob (H5437)], 'Thou wilt turn thyself (to me and) comfort me.'