Sinclair Ferguson, commenting on 1 John 2, has stated:
“The essential exhortation John is giving to us rocks us back on our heels. He is saying this: If you desire anything less for yourself than absolute obedience to God, a life of total devotion to the Lord, a life of absolute sin-less-ness — if you desire anything less, you are fighting against God's desire for you.
It is overwhelming.
But you see, he can issue such an exhortation because he knows that there is sufficient grace in Jesus Christ to support that exhortation.
And it is when we feel both of these, by God's grace, that our lives begin to make progress.”
If you want to listen to the sermon, you can hear it at: http://www.sermonaudio.com/sermoninfo.asp?SID=5712953121