This by way of Tony Reinke:

“There is nothing between the person of the Lord Jesus and the person of the believer as that union and communion develops and grows. I think this is a very important thing for us to grasp. Let me put it the way I sometimes put it: The union with Christ we have is not that we somehow or another share His grace. Because – follow me carefully – there actually is no ‘thing’ as grace. That actually is a Medieval Roman Catholic teaching. There is a ‘thing’ called grace that can be separated from the person of Jesus Christ. It is something Jesus Christ won on the Cross and He can bestow it on you. And there are at least seven ways it can be bestowed on you and they all, as it happens, turn out to be in the hands of the church. And you can have this kind of grace, and this kind of grace, and this kind of grace … There is no such ‘thing’ as grace! Grace is not some appendage to His being. Nor is it some substance that flows from us: ‘Let me give you grace.’ All there is is the Lord Jesus Himself. And so when Jesus speaks about us abiding in Him and He abiding in us – however mysterious it may be, mystical in that sense – it is a personal union. Do not let us fail because of the abuse of expressions. Do not let us fail to understand that, at the end of the day, actually Christianity is Christ because there isn’t anything else. There is no atonement that somehow can be detached from who the Lord Jesus is. There is no grace that can be attached to you transferred from Him. All there is is Christ and your soul.”

–Sinclair Ferguson on John 15 at the Banner of Truth Ministers’ Conference in Grantham, PA this Spring.