I can be in a really strange space, you know, really dazed and confused, and I can pick up my guitar and start singing and find words and music flowing in worship to God which blesses me and anyone else around me. Why? I can be feeling nonplussed and sceptical, ready to judge every spiritual manifestation around me, but if the opportunity comes I can lay my hand on someone else's hurt, command it to be healed and sense God backing me up with some amount of power. Why? I can be talking to a friend and what I say is not of much importance until suddenly I'm speaking from God and I wish I was recording it, because it's so incisive and true. Why?
The answers to my why's are not answers at all. They are more or less just 'because.' And that's all there is to it. God does this thing with us for his uses and his pleasure. It amounts to "Ours is not to reason why, ours is just to make ourselves available and not to be prideful at all when there are good results because left to ourselves we never would have produced in us what he does..."