Isaiah 53:4

Isaiah 53:4 "Surely he hath borne our griefs and carried our sorrows: yet we did esteem him stricken, smitten of G-d, and afflicted."

Compare with

Matthew 8: 16-17 "When the even was come, they brought unto him many that were possessed with devils; and he cast out the spirits with his word, and healed all that were sick: That it might be fulfilled which was spoken by Esaias the prophet saying, Himself took our infirmities, and bare our sicknesses."

Yeshua is the one being talked about in the Tenach(Old Covenant) and in the New Covenant.  He is the one sent from G-d, wrapped in human flesh to be born of a virgin,  anointed of G-d to bear our sins on the tree of Golgotha, to pay for our sins with his blood poured out, to be buried and rise bodily in three days, to ascend up into heaven after many days and coming again to set up his thousand year kingdom.  What a holy G-d we serve.