How do we know that redemption is by God's mercy and grace?

The book of Exodus serves as a profound picture of redemption, revealing that it is purely by God's grace and mercy. God intervened to liberate the Israelites from Egyptian bondage, which is not based on their merit but rather God's sovereign plan and promise. The narrative illustrates that while Israel suffered under great burdens, their cries for deliverance prompted God's merciful response. Exodus teaches us that in our spiritual bondage to sin, God is the sole deliverer, demonstrating mercy through His covenant with His people. The concept that redemption is not earned by works but granted through God's grace is a recurring theme in the scriptures, reminding believers that salvation is rooted in God's unmerited favor rather than human effort.