HEAVEN IS SINGING 노래하는 천국[ Revelation 19:1 - 19:8 ] - hymn 20They cried, “Amen, Hallelujah!”[ REVELATION 19:4 ] Joy was apparent in their voices as the high school choir sang the Argentinian song “El Cielo Canta Alegría.” I was enjoying the performance but couldn’t understand the lyrics because I don’t know Spanish. But it wasn’t long until I recognized a famil- iar word as the choir began to ju..