If you are already aware of two of the four favoured angels Gabriel and Michael, then the two left are Uriel and Raphael.
Another more commonly-used term for one of the four favoured angels is 'archangel'. For example, Gabriel would be referred to as the Archangel Gabriel.
Gabriel is the highest archangel whose name means ‘God is my strength’, and is often referred to as the leader of the angels as he acts as God’s personal messenger.
He is also often called the chief of the four favoured angels and the spirit of the truth, a reference to his duty of delivering the messages of God.
Gabriel is also the patron saint of diplomacy. He first appears in the Bible in the Book of Daniel where he is delivering explanations of Daniel’s visions. In the Gospel according to Luke, Gabriel is portrayed as predicting the births of both John the Baptist and Jesus. He is also one of the only two (possibly three) angels named throughout the entire Bible.
Michael is another archangel who is mentioned by name in the Book of Daniel, the Book of Jude and the Book of Revelation.
In the latter he leads the army of God against the Devil during his uprising. The name Michael means ‘who is like God’ which has lead to much debate about the underlying meaning.
Raphael is often listed as being the third archangel. His name means ‘it is God who heals’ or more simply ‘God heals’ which explains why in Judeo-Christian traditions in performs all manners of healings.
An angel by the name of Raphael appears only appears in the Deuterocanonical Book of Tobit which is considered canonical by Roman Catholic and Orthodox Christians.
A feast day for Raphael was first introduced by the Catholic church in 1921 and is celebrated on 24th October. Raphael is the patron saint of many things, all of which have some relation to medicine or healing.
The archangel Uriel, whose name means ‘God is my light’ is one of the archangels of post-Exilic Rabbinic tradition, and also of certain Christian traditions.
When a fourth archangel is added to the previous three to represent the four cardinal points, Uriel is the fourth archangel to be mentioned.
The scriptures that Uriel appears in depends upon which religion’s scriptures you read although he appears in the Second Book of Esdras (sometimes called Esdras IV in Catholic versions) and he is also listed as the third angel in the Testament of Solomon. Uriel is the patron saint of the Sacrament of Confirmation.