They are linked through holy books and prophets. They believe in Almighty God, prophets, angels, heaven and hell, life after death, day of judgement.
Aside from what is considered a monotheistic faith, or belief in one God, not much theologically agrees. Jesus had said: "I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them which despitefully use you, and persecute you; That ye may be the children of your Father which is in heaven: for he maketh his sun to rise on the evil and on the good, and sendeth rain on the just and on the unjust." Matthew 5:44,45. Many other Scriptures demonstrate a disparity between the two faiths.
The main similarities are:
Hint: Both religions are different only in some faith issues that are regarding the relationship between yourself and your God which is a matter to be resolved by God on the Day of Judgment. However, both religions are quite similar in all issues regarding relationships among all people. In reality, there are no differences between the two religions regarding the way that people of different religions should treat each other. This, logically and spiritually, calls all people to live together in love, peace, and harmony regardless their different religions or beliefs.
Islam, Judaism and Christianity.
Christianity, Islam
Islam, Christianity
The Bible is to Christianity as the Qur'an (Koran) is to Islam.
Judaism, Christianity, and Islam have all claimed the Holy Land for themselves.
Christianity, but Islam may overtake Christianity relatively soon.
Christianity is to Bible as Islam to Quran.
Judaism, Christianity, and Islam religions.
Both Islam and Christianity originated out of Judaism.
Neither Islam nor Christianity believe in idols,
For Judaism and Christianity it is Jerusalem. For Islam it is Mecca.
Christianity, Islam, Buddhism, Hinduism