“God both calls Himself our Father and would have us so address Him. By the greatness of this name He frees us from all distrust, since no greater feeling of love can be found elsewhere than in the Father.
Therefore He could not attest His own boundless love toward us with any surer proof than the fact that we are called ‘children of God’ (1 John 3:1). But just as He surpasses all men in goodness and mercy, so is His love greater and more excellent than all our parents’ love.
Hence, though all earthly fathers should divest themselves of all feeling of fatherhood and forsake their children, He will never fail us, since He cannot deny Himself.
For we have His promise: ‘If you, although you are evil, know how to give good gifts to your children, how much more will your Father, who is in heaven?'” (Matthew 7:11)
–John Calvin, Institutes of the Christian Religion, John T. McNeill, ed, Ford Lewis Battles, trans, Library of Christian Classics (Philadelphia: Westminster, 1960 ), III.xx.36.