What's a Prophetic Utterance?

I Thessalonians 5:20

What is a prophet?

What is the definition of prophecy?

What is a prophetic utterance?

Can you back your answers up with Scripture?

Is there still the office of prophet today?

How is preaching related to prophecy?

What is the importance of preaching for the Body today?

How can we, do we, despise prophetic utterances today?

According to these verses, where did the Bible come from?

Isaiah 16:13~Haggai 1:1~

Jeremiah 1:9~     Zechariah 1:1~

Ezekiel 2:7~  Romans 16:25-26~

Hosea 1:1~    2 Timothy 3:16~

Joel 1:1~ 2 Peter 1:19-21~

Micah 1:1~   Revelation 1:3~

Zephaniah 1:1~   Revelation 22:7, 10, 18-19~

What does 1 Corinthians 14 say regarding prophecy (verses 1-6, 23-26, 37-40)?