Amos 7:10–17 (NKJV)
10 Then Amaziah the priest of Bethel sent to Jeroboam king of Israel, saying, “Amos has conspired against you in the midst of the house of Israel. The land is not able to bear all his words. 11 For thus Amos has said: ‘Jeroboam shall die by the sword, and Israel shall surely be led away captive from their own land.’ ”
12 Then Amaziah said to Amos: “Go, you seer! Flee to the land of Judah. There eat bread, and there prophesy.
13 But never again prophesy at Bethel, for it is the king’s sanctuary, and it is the royal residence.”
14 Then Amos answered, and said to Amaziah: “I was no prophet, nor was I a son of a prophet, but I was a sheepbreeder and a tender of sycamore fruit.
15 Then the Lord took me as I followed the flock, and the Lord said to me, ‘Go, prophesy to My people Israel.’
16 Now therefore, hear the word of the Lord: You say, ‘Do not prophesy against Israel, and do not spout against the house of Isaac.’
17 “Therefore thus says the Lord: ‘Your wife shall be a harlot in the city; Your sons and daughters shall fall by the sword; Your land shall be divided by survey line; You shall die in a defiled land; And Israel shall surely be led away captive from his own land.’ ”
I believe the primary message of this passage is the boldness of Amos while knowing he was operating under the calling and anointing of the Lord. Although the priest instructed him to no longer prophecy against Israel, he refused, declaring that his anointing was not from lineage or from appointment by man, but God called him from the sheepfold. When one know that they are anointed, boldness is not an issue. Respond to the call of God and walk in that bold anointing!