In 1 Chronicles 25 v 1-7, the musicians were chosen to prophesy in string instruments in worship, just like David did to Saul in 1 Samuel 16 v 23. This was because David understood that the prophetic worshippers carry and bring down the presence of the Lord. Isaiah 61 v1 describes what happens when the spirit of the Lord is upon a prophet; ‘The Spirit of the Almighty Lord is with me because the Lord has anointed me to deliver good news to humble people. He has sent me to heal those who are broken-hearted, to announce that captives will be set free and prisoners will be released’