The phrase "kingdom come what love can be" ties directly to the song "What Love Can Be" by the hard rock band Kingdom Come. The song was released in 1988 as part of their debut album titled "Kingdom Come." This song reflects themes around the possibilities and expressions of love. Kingdom Come is known for their rock genre style, and the song "What Love Can Be" is one of their notable tracks from this album. The phrase itself as a lyric and title can be interpreted as an exploration or question about the nature and potential of love—the kinds of love that can exist or be experienced. Additionally, "to kingdom come" as an idiomatic expression means "to a state of complete destruction," but in the context of the song, it is not used in that literal destructive sense but more poetically or metaphorically tied to what love can represent or bring about.
If the interest is in the song or the band's work, the song "What Love Can Be" is from the 1988 album "Kingdom Come," which includes other rock hits and highlights the band’s style and thematic approach to love and rock music.
