Arrodillado means 'kneeling'. It's a visually striking and emotionally charged word that isn't found in every song, making it quite memorable.
In the song, the artist sings, "¿Cómo negar, arrodillado ante mi Dios, que no la quiero?" (How can I deny, kneeling before my God, that I don't love her?). This powerful imagery conveys a deep sense of desperation and sincerity, highlighting the profound impact of his love and sorrow.
"Duele" is a bachata about loving someone who will never love you back, and about refusing to pretend otherwise. The singer asks how he could possibly deny what he feels when he is the one dying for her, and when his mouth was the one that took her first kiss.
The chorus says the pain plainly and keeps saying it. It hurts to live alone, it hurts when she cannot love you, and it hurts most when the person you want will never want you. The title carries the whole song: "duele" is the Spanish verb "doler", used the way English uses "it hurts".
In the second half he takes the question to God. Kneeling, he still cannot lie about it. At night he misses the smell of her skin, his life no longer feels like a life, and everything he built falls apart without her.
Between the verses you hear the shout-outs bachata is built on. He calls his musicians by name and then hands the song to the genre itself, closing with "República Dominicana, la bachata volvió", the Dominican Republic, bachata is back.