What does the Bible say about indifference towards others?

In the book of Obadiah, indifference is highlighted as a grave sin, particularly the indifference shown by Esau towards his brother Jacob during Jacob's time of calamity. God shows Esau's failure to extend sympathy and kindness when his brother was suffering, saying, 'Thou shouldest not have looked on the day of thy brother in the day that he became a stranger' (Obadiah 11). God's Word reveals that such indifference is not just a personal fault but a serious moral failing that leads to dire consequences.