Bottom line: A church known for being prospered by God's power is a church that preaches, prays, and praises.
The early church turned the world upside in less than a generation. How? By the power of God. Jesus promised the power before He ascended, and He sent the power in the person of the Holy Spirit. What God said to Zerubbabel He could say to us, "Not by might, nor by power, but by my spirit, saith the LORD." Every great thing that happens for the kingdom happens as a result of God's power.
How do we see the power of God practically displayed in and through the church? We preach the Word/Gospel; we pray as a "house of prayer;" and we praise the One who inhabits our praises, for where God's presence resides His power abides.