The voice speaks of Babylon's sins as if they were objects that could form a pile. Alternate translation: "Her sins are so many they are like a pile that reaches heaven" (See: [[rc://en/ta/man/translate/figs-metaphor]])
"has thought of" or "has started to pay attention to." This does not mean that God remembered something he had forgotten. See how you translated "called to mind" in [Revelation 16:19](../16/19.md).