The love of a parent is a rare type of love; a type of love that we don't experience often. I'd compare it to the most Heavenly type of love we'll ever experience in our earthly bodies: sacrificial, endless love.
In a Biblical sense, this kind of love is called "agape". Agape love, by definition is “selfless, sacrificial, unconditional love, the highest of the four types of love in the Bible”. This Greek word and variations of it are found throughout the New Testament. Agape perfectly describes the kind of love Jesus Christ has for his Father and for his followers: