Then you must not be aware of gifts of the Spirit.
1 Corinthians 12:4Now there are diversities of gifts, but the same Spirit. 5And there are differences of administrations, but the same Lord. 6And there are diversities of operations, but it is the same God which worketh all in all. 7But the manifestation of the Spirit is given to every man to profit withal. 8For to one is given by the Spirit the word of wisdom; to another the word of knowledge by the same Spirit; 9To another faith by the same Spirit; to another the gifts of healing by the same Spirit; 10To another the working of miracles; to another prophecy; to another discerning of spirits; to another divers kinds of tongues; to another the interpretation of tongues: 11But all these worketh that one and the selfsame Spirit, dividing to every man severally as he will.
And, it is the REMNANT church that has the gift of prophecy:
The Prophetic Gift in the Remnant Church. Revelation 12 reveals two major periods of persecution. During the first, which extended from A.D. 538 to A.D. 1798 (Rev. 12:6, 14; see chapter 12 of this book), loyal believers suffered intense persecution. Again, just before the Second Advent, Satan will attack "the remnant of her offspring," the remnant church that refuses to give up allegiance to Christ. Revelation characterizes the loyal believers who make up the remnant as they "who keep the commandments of God and have the testimony of Jesus Christ" (Rev. 12:17).
That the phrase "the testimony of Jesus" speaks of prophetic revelation is clear from later conversations between the angel and John.8
Near the end of the book the angel identifies himself as "'your fellow servant, and of your brethren who have the testimony of Jesus'" (Rev. 19:10) and "'your fellowservant, and of your brethren the prophets'" (Rev. 22:9). These parallel expressions make it clear that it is the prophets who have "the testimony of Jesus."9 This explains the angel's statement that "'the testimony of Jesus is the spirit of prophecy'" (Rev. 19:10).
Commenting on this text, James Moffat wrote, "'For the testimony or witness of (i.e., borne by) Jesus is (i.e., constitutes) the spirit of prophecy.' This. . . specially defines the brethren who hold the testimony of Jesus as possessors of prophetic inspiration. The testimony of Jesus is practically equivalent to Jesus testifying (xxii.20). It is the self-revelation of Jesus (according to [Rev.] 1:1, due ultimately to God) which moves the Christian prophets."10
So the expression the Spirit of prophecy can refer to (1) the Holy Spirit's inspiring the prophet with a revelation from God, (2) the operation of the gift of prophecy, and (3) the medium of prophecy itself.
The prophetic gift, Jesus' witness "to the church through the medium of prophecy, "11 comprises a distinctive characteristic of the remnant church. Jeremiah linked the demise of this gift with lawlessness. "The Law is no more, and her prophets find no vision from the Lord" (Lam. 2:9). Revelation identifies the possession of the two as distinctive characteristics of the end-time church; its members "keep the commandments of God and have the testimony of Jesus Christ"—the prophetic gift (Rev. 12:17).
God gave the prophetic gift to the "church" of the Exodus to organize, instruct, and guide His people (Acts 7:38, KJV). "By a prophet the Lord brought Israel out of Egypt, and by a prophet he was preserved" (Hosea 12:13). It comes as no surprise, then, to find that gift among those who are involved in the ultimate exodus—the escape from sin-polluted Planet Earth to the heavenly Canaan. This exodus, which will follow the Second Advent, is the final and complete fulfillment of Isaiah 11:11: "It shall come to pass in that day that the Lord shall set His hand again the second time to recover the remnant of His people who are left." http://www.sdanet.org/atissue/books/27/27-17.htm Chapter 17 The Gift of Prophecy (what Seventh-day-Adventists believe)