Is flyleaf a good band and do they swear in their music?

Flyleaf is okay (your mileage may vary) and as a Christian band, they do not swear.

They have a couple of good songs (like Again, and I’m So Sick) but they’re too Christian for me.
And I don’t think they swear at all.

It really depends on what kind of music you like.

They dont swear, and they are awesome.

They don’t swear. They do screamo and metal, but their lyrics are all from some sort of experience or feeling with their spiritual life. They’re a Christian metal band. Definitely worth checking out, and if you like them, check out Lost In You by Red. They’re also a really great Christian band.