Hagar is a significant figure in the Bible, known for her role as the maidservant of Sarah, the wife of Abraham. When Sarah was unable to have children, she offered Hagar to Abraham to bear a child on her behalf. This led to the birth of Ishmael, who is considered an important figure in Islamic tradition as well. Later, Sarah miraculously gave birth to Isaac, which created tension between her and Hagar. Eventually, Hagar and Ishmael were sent away into the wilderness, where they faced many challenges. However, God provided for them, showing compassion and care for both mother and son.