How can we be sure that God has called us by His grace?

The assurance of God's call through grace is grounded in the transformative work of the Holy Spirit in our hearts. The sermon emphasizes that our calling is due to God's eternal plan, reflecting His thoughts of love and mercy towards us. As Paul teaches, 'What hast thou that thou hast not received?' This underscores the reality that our faith and desire to serve God stem from His prior work in our lives. Additionally, the evidence of our transformation and fruitfulness in accordance with God's Word can serve as confirmation of our calling and election in Christ.