How do we know that God calls people to salvation?

The call to salvation is rooted in the sovereign grace of God, who works through the preaching of the gospel. As Peter preached to the crowd at Pentecost, he declared that 'the promise is to you and to your children and to as many as the Lord our God shall call.' This indicates that God has a chosen people whom He calls through the gospel. The Holy Spirit plays a crucial role by opening the hearts of the hearers, enabling them to understand their need for Christ and the truth of the gospel. This divine initiative in calling sinners is foundational to the historic Reformed understanding of salvation.