‘Then the Spirit came on Amasai, chief of the Thirty, and he said: “We are yours, David! We are with you, son of Jesse! Success, success to you, and success to those who help you, for your God will help you.” So David received them and made them leaders of his raiding bands.’ (1Chronicles 12v18)
It is helpful to view this verse in context. The group led by Amasai seek out David and his men who are living in the wilderness where they operate like a hit and run raiding party. David’s question to Amasai about whether he and his men have come in peace or to betray him to his enemies gives us an idea of the times and the fluidity of loyalty and agenda.
From scripture, Amasai’s response – swearing allegiance to David and his cause – is seen as a Spirit led decision. The fact that it is inspired in the moment by the spirit that rests ‘on’ him suggests it is a momentary revelation. Whatever way we understand this, what is clear is that Amasai considers David a man worthy of following because God’s favour and providence rests on him