If strict orthodox Jews don’t believe that Jesus is Messiah, then how have they/do they atone for sin, since no temple is left for sacrifices?
After the Temple was destroyed, the Jewish leaders adopted an atonement ceremony to replace Yom Kippur (the Day of Atonement) wherein their atonement is gained in fasting, the public confession of sins, seeking and granting forgiveness, and doing good deeds. Some Orthodox Jews hold a live chicken over their heads as the symbol of their atonement as the scapegoat was in Temple times. The chicken is then killed and given to the poor. Alternatively, a bag of money equal to the price of the chicken may be used.