Which was, and is, and is to come ( All in his Plan)

Much of Isaiah 53 is written in past tense. For example Surely he took up our pain     and bore our suffering, yet we considered him punished by God,     stricken by him, and afflicted. 5 But he was pierced for our transgressions,     he was crushed for our iniquities; the punishment that brought us peace was on him,     and by his wounds we are healed. 6 We all, like sheep, have gone astray,     each of us has turned to our own way; and the Lord has laid on him     the iniquity of us all. It's like it happened before it happened, for, this prophecy was given thousands of years before the manifestation of Jesus Christ on earth.  Isn't that amazing? The book of Revelations refers to "the lamb slain before the foundation of the world". This means, the plan was already performed in the realm of eternity. Amid these verses, I took notice of three verses where there is a shift from the past-tense. They are written in the  present tense. Isaiah 53:3"He is despised and rejected of men..." Of a truth, He still is. Isaiah 53:5"...with his stripes we are healed". The healing that his stripes made available is available still. Isaiah 53:7"He is brought as a lamb to the slaughter". He is and always will be the one and only sacrifice for all. This chapter is a remarkable look at the realm of eternity. In it is past, present, and future all wrapped in one. It serves as testament of the eternal God- the almighty omniscient Spirit, who is Jehovah and does all things with perfect purpose.  What better hands to have your life in? Warmest thoughts and prayers, Chantel