We come into that Fatherhood relationship with God through out faith in Jesus Christ. Christ gives to us a new nature through the Holy Spirit. This nature now gives us the ability to relate to God in an intimate and loving way. We become adopted into the family of God as His children. He becomes our Father.
Fatherhood implies a loving, caring and protective relationship.
It is described in the Bible in two main ways, the parent and the shepherd. The shepherd is one who leaves the 99 in the safety of the pasture and goes and finds the one lost sheep. The image of the shepherd is a powerful picture of God's love for us. The image more often used to describe the love of God is the image of a parent. Certainly we know the image of the father who forgives, protects, is faithful, provides, judges rightly, and provides security.