How do we know that God's love for His people is unconditional?

In the sermon, it is emphasized that God's love for His people is not contingent upon their actions but is a result of His sovereign grace. Romans 5:8 clearly states that God demonstrates His love for us in that while we were still sinners, Christ died for us. This reflects the essence of God's love as one that is given freely, rooted in His character rather than our worthiness. John 15:16 further illustrates this by affirming that we did not choose Him, but He chose us. Therefore, His love endures despite our failures and sins, reinforcing that it comes from His nature, which is unchanged and faithful.