Relations between Muslims and Christians have assumed different dimensions throughout history. There are examples of peaceful relationships as well as tensions. The meeting of Saint Francis of Assisi with Sultan Malik-el-Kamil and the letters and gifts between Sultan Abdulhamid II and Pope Leon XIII are two examples of friendly relations. Pope Francis, in his encyclical Fratelli tutti, encourages all Catholics and other Christians to be aware of the importance of building brotherhood not only among all those who believe in Christ but with those who belong to other religions as well. Tense relations between Muslims and Christians due to many reasons, such as war, migration, fear, and prejudices, are obvious upon examining European history. A number of political problems also contribute. However, there were also periods when the culture of living together was highly developed. It is noteworthy that today there are mutual prejudices between Muslims and Christians for many reasons. In order to eliminate these prejudices, various issues will be addressed in this paper. In the first part of the paper, the negativities will be set aside, and the examples of good relations in history between Muslims and Christians will be emphasized. The second part will emphasize the verses in the Bible and the Quran that express the importance of living together.