What is the importance of the relationship between Gabriel and Daniel in the Bible?

Answer 1

Well while Daniel was praying, the angel Gabriel appears saying: "O Daniel, now I have come forth to make you have insight with understanding. At the start of your entreaties a word went forth, and I myself have come to make report, because you are someone very desirable. So give consideration to the matter, and have understanding in the thing seen."(Daniel 9:22, 23)
The angel Gabriel was sent to give Daniel insight and to answer his prayer of faith.
Jehovah God, through his angel Gabriel, assures Daniel that the Jews will be restored to their homeland and also gives him insight into the appearance of the foretold Messiah [He does so at Daniel 9:24, 25 when Gabriel tells Daniel: "There are seventy weeks that have been determined upon your people and upon your holy city, in order to terminate the transgression, and to finish off sin, and to make atonement for error, and to bring in righteousness for times indefinite, and to imprint a seal upon vision and prophet, and to anoint the Holy of Holies. And you should know and have the insight that from the going forth of the word to restore and to rebuild Jerusalem until Messiah the Leader, there will be seven weeks, also sixty-two weeks. She will return and be actually rebuilt, with a public square and moat, but in the straits of the times."].