The angel of the LORD appeared to him in a dream, saying, Joseph, you son of David, fear not to take to you Mary your wife: for that which is conceived in her is of the Holy Ghost. And she shall bring forth a son, and you shall call his name JESUS: for he shall save his people from their sins. (Matthew 1:20-21 AKJV, emphasis mine)
The angel said to them [shepherds], Fear not: for, behold, I bring you good tidings of great joy, which shall be to all people. For to you is born this day in the city of David a Savior, which is Christ the Lord. (Luke 2:10-11 AKJV, emphasis mine)
Jesus is the Savior chosen by God and sent by Him to help mankind.
Jesus saves all who believe in Him, from the misery and consequences of harming ourselves and others (“sins”).