"... he who does the Will of My Father."

Jesus explains to His disciples that it is not enough to call Him Lord and yet refuse to obey Him.  In Matthew's Gospel Jesus explains this. 

"Not everyone who says to Me, 'Lord, Lord,' shall enter the Kingdom of Heaven, but he who does the Will of My Father who is in Heaven."  Matt 7:21-27

Jesus is speaking about yeilding daily to His Will and to God's design for life and creation.  Jesus knows the struggle and the fickled nature of the human heart.  He asked Peter three time "do you love Me" (Jn 21:15ff) because He knew how uncertain Peter could be.  It does one little good to say with their lips that they have "faith in Christ" and yet are unwilling to yeild their life to Him.

But in every area of our life we must find a real love for Jesus Christ.  In terms of money, time, talent... and yes, even in terms of our bodies.  St. Paul explains this in 1 Cor 6:18-20.

Flee immorality. Every other sin that a man commits is outside the body, but the immoral man sins against his own body. Or do you not know that your body is a temple of the Holy Spirit who is in you, whom you have from God, and that you are not your own? For you have been bought with a price: therefore glorify God in your body. 1Cor 6:18-20

Yes, we actually glorify God in our bodies.  What's more, our very body is the meeting ground where the culture of life and the culture of death interface.  Let us always choose life!  Deut 30:19,20.