How do we know that God shows mercy to those who sin?

In 2 Samuel 7:14-15, God promises David that even if Solomon commits iniquity, He will chasten him but will not remove His mercy from him. This illustrates that while God disciplines His children for their sins, He remains merciful and committed to them. The narrative of Solomon, who turned his heart toward other gods despite being beloved by the Lord, further emphasizes that God's mercy does not depend on perfection but on His covenant love. Throughout Scripture, we see that God's character is one of mercy and compassion, as stated in Romans 5:8, where we learn that Christ died for us while we were still sinners, showcasing the depth of His grace towards humanity.