After the miracle of the healing of the crippled person by Peter and John, the miracles get even stronger, the power more intense. This is because there was great faith among the believers, and they were completely one in it.
Acts 4:23-24 On their release, Peter and John went back to their own people and reported all that the chief priests and elders had said to them. 24 When they heard this, they raised their voices together in prayer to God.
When we come together in prayer, power is on its way. The faith level in the room got so strong that they were again filled with the Holy Spirit, and the room itself literally started shaking. I have experienced something like this once in my life, and it is an incredible booster. It boldens your (combined) faith like nothing else. It is no surprise that thousands were added to the church because of this, and miracles kept happening left, right and center.
When we use what we have (previous blog) and come together in prayer, that is, in one accord, with one mind and vision only, then God can start sending down his love to us, and through us. (see also Psalm 133:1-3)