As great as it is, God did not simply send us the Bible, a message through the communication medium of writing. If that was all he could do for us, salvation would ultimately be in our hands —it would have been up to us to follow his instructions. But instead, God also came himself, in the flesh, to be fully present to us in Jesus Christ. It is only through his being fully present with us that we could be saved by grace.
In the same way, we must learn to be fully present in community with our neighbors and with our Christian brothers and sisters. It is not enough to simply show up at a church service where you live physically, but then try to maintain all your closest relationships with friends and family members who live far away. God made us embodied beings—the body (though it is weakened by sin) is a great good. God was so positive about bodies that he himself assumed a body in the incarnation of Jesus Christ. If we are going to give and receive grace from each other, we have to get it the way God gave it to us. We have to be involved in accountable friendships and deep relationships with other people where we live.
– Tim Keller