Velas literally translates to "candles". While seemingly simple, this word is central to the song's theme and carries significant cultural and spiritual weight.
In the lyrics, Santana repeatedly sings "Todas las noches te prendo velas / Pa' que mis santos la protejan" (Every night I light candles for you / So that my saints protect her). Lighting candles is a common practice in many Latin American cultures to make offerings, pray for protection, or honor saints and loved ones. This word unlocks a deeper understanding of devotion and cultural expression within the song.
The whole song is one prayer said over and over: "Todas las noches te prendo velas" [Every night I light candles for you]. The candles are literal, lit to saints, and he says exactly what he wants from them in "Pa' que mis santos la protejan" [So that my saints protect her]. What is odd and good about it is that the devotion never leaves the body behind. He thanks whoever might be listening, "A Dios, a Mahoma, a los ángeles o a Buda" [To God, to Muhammad, to the angels or to Buddha], and the thanks turns out to be for "dejarme verte desnuda" [letting me see you naked]. A few lines later, sweat becomes a sacrament: "Es agua bendita lo que tu cuerpo en el mío suda" [What your body sweats on mine is holy water].
Then the last verse stops flirting. "Si ojos tienen, que no te vean" [If they have eyes, may they not see you] opens a list against eyes, hands and feet, and against whoever they belong to, and it lands where the candles were pointing the whole time: "No permitas que su muerte sea violenta" [Don't let her death be violent]. That is a lot to ask of a saint and he knows it, so he offers the only thing he actually has: "Pero también sabes" [But you also know], "De mi fe" [Of my faith].