Acts 16:25-26 (BBE)
25 But about the middle of the night, Paul and Silas were making prayers and songs to God in the hearing of the prisoners;
26 And suddenly there was an earth-shock so that the base of the prison was moved: and all the doors came open, and everyone’s chains came off.

Suddenly is when something happens quickly, without warning, or unexpectedly, out of the blue occurrence without transition from the previous state. A happening without previous notice or with very brief notice; coming unexpectedly, or without the common preparation; immediate; instant; speedy, abrupt turn of events.
Suddenly! A eureka moment! The Aha moment! Whatever expression you use, we are all waiting for some form of suddenly. We hunger for sudden moments daily, we may be waiting for a long time for something and are in expectation but when it does finally come, it may be a sudden moment.
I truly can’t imagine or say what Paul and Silas were expecting when they started praying but praying and singing hymns to God always attracts a blessing, especially joy for the honour of suffering for Christ’s sake.
Every time we spend spiritual energy and seed, we are guaranteed a “suddenly” in some ways because we never know when and how the answer will come.
Suddenly! There was a great earthquake—had the men known the Lord was going to use an earthquake, they may have asked for another miracle but by the earthquake, the bonds of the prisoners were loosened, showing symbolically, the nature of the Christian faith: that it shakes and terrifies the guilty, it proclaims deliverance to the captives, and the opening of the prison-doors to them that are bound; and sets at liberty them that are bruised according to Luke 4:18-19.
Suddenly a great host of angels appeared around the shepherds at Jesus’ birth in Luke 2:13. Suddenly an angel appeared inside Jesus’ empty tomb in Matthew 28:2.
How long have you waited for your suddenly? Be patient, it shall happen suddenly.
According to Number 12:4, God can speak into that matter suddenly, He can speak into that situation suddenly. The sudden interference of God in our business shows our importance to God and His desire to meet our needs and answer our prayers.
Although Peter was asleep in his prison cell in Acts 12:5-12, the saints were praying for him and suddenly he received the answer to their prayer in the form of an angel.
All of God’s promises are suddenly, as He says in Isaiah 48:3, He’s given us His word and all of them shall come suddenly.
Some of us have been battling “Babylon” for a while and we are almost in despair because it seems like the battle will never be over, take heart, for according to Jeremiah 51:8, there will be a sudden downfall of every one of your foes.
Suddenly! The Lord will grant you divine revelation, vision, and your eyes will be opened as the men on the way to Emmaus after encountering the Messiah in Luke 24:30.
Suddenly! The Lord can arrest you and stop you from doing something terrible as He did with Paul on his way to do mischief in Acts 9:3.
You may be waiting for a sign or miracle from the Lord, and are looking for tell-tale signs that it’s about to occur, no sign necessarily heralds a suddenly, as He did in 2 Kings 3:17, whatever you are waiting for will happen suddenly, unexpectedly, with no prior warning. Suddenly!
The Bible says that Jesus will suddenly return when no one expects it. Are you prepared, and ready because suddenly has no time frame?
Shalom