Paul uses a quote from the prophet Isaiah to illustrate God's mercy and faithfulness. The reference to Sodom and Gomorrah, cities destroyed due to their wickedness, serves as a stark reminder of what could happen without divine intervention. However, God, in His mercy, has preserved a remnant of His people, ensuring their survival and continuation. This act of preservation is a testament to God's grace, showing that He does not abandon His people even when they fall short.
The verse underscores the importance of God's role in the salvation and preservation of His people. It reassures believers that despite human failings, God's plans are steadfast, and His mercy is abundant. By preserving a remnant, God demonstrates His commitment to His covenant and His people, ensuring that His purposes are fulfilled. This message of hope and assurance is relevant to all believers, reminding them of God's unwavering faithfulness and the security found in His promises.