Acts 19:6 – And when Paul had laid his hands on them, the Holy Spirit came on them, and they began speaking in tongues and prophesying.
I think many Christians have a narrow understanding of the gift of prophesy. Many think that prophesy is always predictive, declaring the future plans of the Lord. Certainly prophecy can be that but the gift of prophesy in the New Testament includes other things, specifically it includes magnifying or worshipping the Lord supernaturally. One example is in today’s verse. The disciples in Ephesus who were baptized in the Holy Spirit responded the same way those in Cornelius’s house did in Acts 10. When they were filled with the Spirit they prophesied, most likely worshipping the Lord by the Spirit. Similarly, at Cornelius’s house, the new believers spoke in tongues and magnified the Lord. This is exactly what the Spirit has always done, specifically in the life of David. David wrote his Psalms by the Spirit of prophesy. David’s Psalms were supernatural, a great display of the Spirit of prophesy. Here is a description from the Life in the Spirit Commentary.
“The immediate consequences of this Spirit-baptism are charismatic manifestations of tongues and prophecy The phrase “and prophesied” must not be assumed to indicate an additional sign. It stands parallel to the phrase “praising God” in Acts 10:46. Prophetic activity is realized in the last days (cf. the events of Pentecost, which shows a close relationship between speaking in tongues and prophesying via Joel 2). Similar to the disciples at Pentecost and Caesarea, these people at Ephesus speak in tongues and give inspired praise to God after receiving the Pentecostal power of the Spirit. Like earlier outpourings of the Spirit, the initial evidence of the charismatic experience of the Ephesian believers is speaking in tongues. Paul instructs, baptizes, and lays hands on them, but through the sovereign action of the prophetic Spirit they are endowed with power for ministry.”
This gift helps us understand supernatural worship. I think that when the Holy Spirit falls on us and we experience the power of His presence, as we yield to His presence we then experience worshipping the Lord in our heavenly language and also worshipping spontaneously in our own language. That supernatural worship is one example of the Spirit of prophesy. Understanding and yielding to this gift in private and public worship changes everything.