Reflection in the fangs

This coming Sunday (11/7) is "Adoption Sunday."  I'm reading Russell Moore's excellent book Adopted For Life.  I was struck by this sobering quote (p29):

"One's "flesh" shows who one's father is--and that's terrifying.  When we "bite and devour one another" (Gal. 5:15), we're imaging one who seeks "someone to devour" (1 Pet. 5:8), not the One who came to seek and save that which was lost. ... Our birth father has fangs.  And left to ourselves, we'll show ourselves to be as serpentine as he is.  That's why our sin ought to disturb us."

Does your sin disturb you?  Do you ever see the reflection of his fangs in your tendency to "bite and devour one another" [think critical spirit, gossip, slander, unrighteous anger, a sharp (or is it forked?) tongue, biting sarcasm, I-have-to-win argumentativeness, back-biting, back-stabbing, etc.]?  When you do, what do you do? 

Should we not look to the One who swallowed up the punishment that our sinful appetites earned us?  Should we not look to the One who crushed that ancient serpent's head (see Gen. 3:15), fangs and all?  He wasn't seeking someone to devour.  He came to seek and save the lost by giving his body and blood to feed and satisfy us.  When we look at him and feed on him, those selfish passions and desires will be crucified (see Gal. 5:24; 6:14) and we will be filled with love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, and self-control (Gal. 5:22).  And our re:flection will look completely different...like the One who loved us and gave himself up for us (Gal. 2:20).