John 10 presents Christ as the Shepherd. This article shows that Christians are assured of their salvation because the Father has given the sheep to the Son, and the Son gave His life for the sheep. Also, the Father and Son are one, so no one can snatch you away from the Father's hand. This is our assurance.
The Bible portrays the relationship of Christ and His church through the image of a shepherd and his sheep. The example of sheep points to the Christian's tendancy to stray, their vulnerability and their need for the flock. In contrast, the image of Shepherd points to Christ as one who protects, nurtures and gathers the sheep.