In Sophocles' Antigone, after Creon has established that Antigone did perform burial rites for Polyneices, Creon decides how to put his niece to death. Originally, he had decreed that the person would be stoned to death, but now he changes his mind and decides to seal her up in a cavern with a small amount of food.
Following Creon's declaration, the Chorus of Theban elders sing a brief ode about Eros, a male divinity associated with love. The Chorus sing about the power of Eros and how it causes people to spend all their money and how love can even cause people to go insane. The Theban elders also note that both human beings and the immortal gods are subject to the power of Eros:
no immortal god escapes from you,
nor any man, who lives but for a day.
(Ian Johnston translation)
Perhaps a better question about this passage would be as follows: "Why do the Theban elders sing their brief ode to Eros at this point in the play?"