"...now in Christ, and in the 'call of his grace' (Gal. 1:6) which is enabled through what he accomplishes in the historically enacted innocence of his mortal life into resurrection, we are offered a new command... This new command is the definitive gospel summons of Jesus: 'follow me.' ...[T]he call 'follow me' is a divine injunction and thus a revealed one, and for this reason it is not first and foremost a summons to an 'imitation'... the call... is rather at one and the same time a summons to faith and simultaneously a summons to obedience. That is, it is a summons to make real 'the righteousness which comes by faith' - i.e. to become in our bodies instruments of his resurrection-righteousness (Rom. 6:13)..."
(from The Command of Grace)