Tyre and Sidon would have been terribly judged; they would have faced everlasting pain and woe. Yet an even worse judgement awaits those who spurn light.
More light from God means more responsibility. The children of Christian parents who reject the gospel will be judged more severely than those brought up by ungodly parents who do not believe. Spiritual opportunity increases spiritual responsibility. The proper response to spiritual privileges is to give thanks and pray to God for a heart that understands all that he has shown us. Although miracles alone could not bring the people to salvation, those who saw what Christ did among them were the more accountable for not repenting and believing his teaching.