What does the Bible say about God's call for us?

In Exodus 3, God speaks to Moses from a burning bush, illustrating His divine call and purpose for His people. God's call is an act of grace, as seen when He assures Moses, 'I have sent thee.' This reflects the Reformed belief that our call into service stems not from our merit but from God's sovereign choice, ultimately ensuring that His will is accomplished. God's purpose is assured as He tells Moses that he will bring His people out of Egypt, indicating that God's faithfulness guarantees the fulfillment of His promises.