How do we know that God causes us to approach Him?

God's calling is transformative. In the sermon, it's explained that when God chooses someone, He also 'causes him to approach unto thee.' This indicates that God's call is effective; He bestows upon us a hearing ear and a believing heart. John 10:27 illustrates this with Christ stating, 'My sheep hear my voice.' This divine causation ensures that those chosen by God will inevitably respond to Him, similar to how an infant cries when it is alive. We are brought to life spiritually, and our response in faith is the evidence of that life given by God, demonstrating His sovereign grace at work in us.