God calls the unlikely - Abraham was a 75-year-old pagan from Ur with a barren wife, yet God chose him just as He chose David, Ruth, Paul, and teenage disciples to change the world. True discipleship demands leaving everything behind, as Jesus told His followers to deny themselves daily and renounce all possessions. Abraham simply "went" when God called, becoming a blessing to all nations through his obedience - the same commission Christ gives us to make disciples and share the gospel at our lunch tables and beyond.