Among dozens of New Testament truths about how we ought to pray together, Acts teaches us that we should pray in 3 ways: in unity; with devotion; and with boldness.

Acts 1:14

All these with one accord were devoting themselves to prayer, together with the women and Mary the mother of Jesus, and his brothers.

Acts 2:42

And they devoted themselves to the apostles' teaching and the fellowship, to the breaking of bread and the prayers.

Acts 6:1-4

Now in these days when the disciples were increasing in number, a complaint by the Hellenists arose against the Hebrews because their widows were being neglected in the daily distribution. And the twelve summoned the full number of the disciples and said, “It is not right that we should give up preaching the word of God to serve tables. Therefore, brothers, pick out from among you seven men of good repute, full of the Spirit and of wisdom, whom we will appoint to this duty. But we will devote ourselves to prayer and to the ministry of the word.”

Acts 13:1-3

Now there were in the church at Antioch prophets and teachers, Barnabas, Simeon who was called Niger, Lucius of Cyrene, Manaen a lifelong friend of Herod the tetrarch, and Saul. While they were worshiping the Lord and fasting, the Holy Spirit said, “Set apart for me Barnabas and Saul for the work to which I have called them.” Then after fasting and praying they laid their hands on them and sent them off.

English Standard Version (ESV)

The Holy Bible, English Standard Version. ESV® Text Edition: 2016. Copyright © 2001 by Crossway Bibles, a publishing ministry of Good News Publishers.