He then lovingly reminds them that He has delivered them before, and can be trusted to do it again. (Isaiah 50:2)
In this chapter, we see a foreshadowing of not only a literal deliverance from exile but also a spiritual one in the Promised One as there are many prophetic references to Messiah.
Vs 5 speaks to the commitment and total submission of Messiah to God. "The Sovereign Lord has opened my ears". This action is described in Exodus 21:5-6 of a bondservant who desires to make a lifelong commitment to their master out of love rather than debt or obligation.
Vs 6 speaks prophetically to the sufferings of Messiah. We know that Jesus was beaten on the back (Mark 15:15). We know Jesus was beaten on the face (Luke 22:63-65). We know that Jesus was mocked and spat upon (Mark 15:19-20).