The word breakthrough first appears in Scripture in Second Samuel 5:20, where David defeats the Philistines at a place he names Baal-perazim β meaning "the Lord who breaks through." Perazim is from the verb paratz β to break through, to burst, like water breaking through a dam. The image is violent and complete. David's comment is "The LORD hath broken forth upon mine enemies before me, as the breach of waters." A wall of water does not slowly seep through. It breaks through.
The pattern of suddenly in the New Testament is striking. Acts 2:2 β "And suddenly there came a sound from heaven." Acts 16:26 β "And suddenly there was a great earthquake." Luke 2:13 β "And suddenly there was with the angel a multitude." The Greek word is aphno β instantly, without preceding indication. God's interventions in Acts are characterized by absence of gradual buildup, long waiting followed by immediate and unmistakable movement. The suddenness is not described as unusual. It is the normal mode of divine breakthrough.
The theology of the appointed time runs through all of this. Habakkuk 2:3 β "For the vision is yet for an appointed time, but at the end it shall speak, and not lie: though it tarry, wait for it; because it will surely come, it will not tarry." This is not a promise that it is coming soon. It is a promise that it has an appointment, and appointments are kept. The waiting is not empty. It is the interval between the promise and the appointed time.
Commentary is from a charismatic Protestant perspective, drawing on KJV text and public-domain sources including Spurgeon, Andrew Murray, and Matthew Henry.