Thanks everybody for your replies.
I thought it must be 'theeving', but wanted unbiased second opinions.
It would have been even more interesting to see what he had been thieving!
I started in 1695 with these kirk session minutes, and didn't find any other reference to him. Perhaps even further back, or there may be nothing else about it at all.
It made a change from the usual items in kirk session minutes!

Thanks for the pertinent information GR2. I wonder where he went?
Being called 'Johnie' as opposed to 'John', makes him sound quite young, but I have really no idea how old he may have been, or which of the several John Cochrans around Strathaven at this time he may have been.