It is the pattern of Salvation:
      1) God willed,
      2) God spoke and
      3) Jesus lived.   

Three is the pattern in Christ's provision for us
      1) Heart - to be born of His Spirit and to let His Words abide in us ( Heart)
      2) Speak - for us to go into all the world and preach the Gospel ( Speak) and then
      3) Fruit - for us to Heal the Sick and set the Captive Free ( Works).   

Three is the pattern into God's Spiritual Law.   
      1) Seed
      2) Time
      3) Harvest

Three is the pattern of Time:
      1) Eternity Past
      2) The age of Humanity (7000 years)
      3) Eternity Future ( New Heaven And Earth)