Hexes means 'in order,' 'next,' or 'following.' It is used almost exclusively by Luke (Luke 7:11; 9:37; Acts 21:1; 25:17; 27:18) to mark narrative progression — the 'next day' or 'following' event. Luke's use of hexes reflects his stated goal in Luke 1:3: to write 'in an orderly account' (kathexes). The word carries the sense of intentional, sequential arrangement.
Luke's repeated use of hexes reflects a theology of narrative: history is not chaos but sequence under divine providence. Each 'next' in Luke-Acts is the outworking of God's plan. The day after Elijah's prayer, the dead boy lives again (1 Kings 17:22). The day after the Spirit falls on Cornelius, Peter reports to Jerusalem. God works in time, in sequence, in the ordinary flow of 'the next day.' The Christian life has a hexes — there is always a next obedience, a next step, a next day to follow Jesus.