The Greek adverb aurion simply means tomorrow or the next day. While seemingly mundane, aurion carries theological weight in several key passages about divine sovereignty, human planning, and eschatological urgency — particularly in Jesus' teaching on anxiety and in the wisdom tradition against presumptuous planning.
Matthew 6:34: 'do not worry about tomorrow, for tomorrow will worry about itself.' Jesus commands the release of tomorrow-anxiety as an act of trust in the Father who provides. James 4:13-14 echoes Hebrew wisdom: those who say they will go today or tomorrow do not even know what tomorrow holds. Tomorrow belongs to God.