"Just as a father has compassion on his children,
So the Lord has compassion on those who fear Him."
A loving father will comfort his children when they are sad, encourage them when they are downtrodden, bear with their weaknesses, and patiently train them to do things right. An earthly father may fail sometime in his duties to his children (almost certainly he will), but our loving Heavenly Father will never fail. Never. To all those who revere Him and call Him "Father" He shows Himself faithful. "See how great a love the Father has bestowed on us, that we would be called children of God; and such we are." (1 John 3:1)