How do we know that God's calling is specific and sovereign?

In 1 Corinthians 1:26, Paul states that not many wise or noble are called, demonstrating the selective nature of God's calling. This principle is further explored in Ephesians 1:14, where Paul prays for believers to understand the hope of their calling. God's calling is not a universal offer of salvation; rather, it is directed towards His chosen ones, as illustrated in Ephesians 4:4, where we find the church identified as the 'called ones.' This reveals that the calling is part of God's purposeful decree, as laid out even before creation (2 Timothy 1:9). Thus, the selective nature of the call reveals God's sovereign will in the salvation of His people.