The phrase, 'Jesus is the answer' is a cliche of evangelism In Brazil, there is even a denomination with this name. Unfortunately it has been noted by sharper-witted pagans that the phrase can be defused with the retort, 'What's the question?' In the process they expose a shift and a sloppiness in world evangelicalism.
If we could interview the early Christians and ask them to sing a song about Jesus, like as not it would have been Psalm 2, judging by the number of times the New Testament quotes it. Psalm 2 was fundamental to the apostles' thinking about Jesus, yet nowadays very few evangelicals would sing it or understand how it relates to Jesus. Times have changed.
The psalm is organised like a play in four scenes, with various speakers: the narrator (David); the rulers of the earth; the LORD in heaven, and his Son, the Messiah.