How do we know that God's love is eternal?

God's love is described as eternal and unchanging, as seen in Scriptures like Ephesians 1:4-5, where we learn that He chose us in Christ before the foundation of the world. This understanding encapsulates the 'I Am' nature of God, suggesting that His attributes, including love and mercy, are not bound by time but operate within His eternal plan and purpose. This eternal aspect assures believers that God's love does not wane or fluctuate based on human actions but remains constant in its richness and depth.