In Plate 61 of Jerusalem, Blake recapitulates the truth conveyed in the both Old and New Testament of the Bible. The Old Testament could be summarized as the repeated attempts of God to form a people who would respond to his love. Failures were punished but eventually forgiveness lead to renewal. The New Testament provided the new paradigm of internalization of Christ as the means of breaking down the cycle of failure and punishment. Forgiveness through Christ within would lead to the Brotherhood of Man. Blake presents the reconciliation of the parents of Jesus over the issue of the conception of their baby as a paradigm of the relationship which evolved in forging the bonds between God and man in the 'four thousand years' of Old Testament history. Joseph's forgiveness of Mary would be the initial work of the Savior in replacing law with grace.
 Now the birth of Jesus Christ was on this wise: When as his mother Mary was espoused to Joseph, before they came together, she was found with child of the Holy Ghost.
 Then Joseph her husband, being a just man, and not willing to make her a publick example, was minded to put her away privily.
 But while he thought on these things, behold, the angel of the Lord appeared unto him in a dream, saying, Joseph, thou son of David, fear not to take unto thee Mary thy wife: for that which is conceived in her is of the Holy Ghost.
Jerusalem, PLATE 61 (E 211)
"Behold: in the Visions of Elohim Jehovah, behold Joseph & Mary
And be comforted O Jerusalem in the Visions of Jehovah Elohim
She looked & saw Joseph the Carpenter in Nazareth & Mary
His espoused Wife. And Mary said, If thou put me away from thee
Dost thou not murder me? Joseph spoke in anger & fury. Should I
Marry a Harlot & an Adulteress? Mary answerd, Art thou more pure
Than thy Maker who forgiveth Sins & calls again Her that is Lost
Tho She hates. he calls her again in love. I love my dear Joseph
But he driveth me away from his presence. yet I hear the voice of God
In the voice of my Husband. tho he is angry for a moment, he will not
Utterly cast me away. if I were pure, never could I taste the sweets
Of the Forgive[ne]ss of Sins! if I were holy! I never could behold the tears
Of love! of him who loves me in the midst of his anger in furnace of fire.
Ah my Mary: said Joseph: weeping over & embracing her closely in
His arms: Doth he forgive Jerusalem & not exact Purity from her who is
Polluted. I heard his voice in my sleep O his Angel in my dream:
Saying, Doth Jehovah Forgive a Debt only on condition that it shall
Be Payed? Doth he Forgive Pollution only on conditions of Purity
That Debt is not Forgiven! That Pollution is not Forgiven
Such is the Forgiveness of the Gods, the Moral Virtues of the
Heathen, whose tender Mercies are Cruelty. But Jehovahs Salvation
Is without Money & without Price, in the Continual Forgiveness of Sins
In the Perpetual Mutual Sacrifice in Great Eternity! for behold!
There is none that liveth & Sinneth not! And this is the Covenant
Of Jehovah: If you Forgive one-another, so shall Jehovah Forgive You:
That He Himself may Dwell among You. Fear not then to take
To thee Mary thy Wife, for she is with Child by the Holy Ghost
Then Mary burst forth into a Song! she flowed like a River of
Many Streams in the arms of Joseph & gave forth her tears of joy
Like many waters, and Emanating into gardens & palaces upon
Euphrates & to forests & floods & animals wild & tame from
Gihon to Hiddekel, & to corn fields & villages & inhabitants
Upon Pison & Arnon & Jordan. And I heard the voice among
The Reapers Saying, Am I Jerusalem the lost Adulteress? or am I
Babylon come up to Jerusalem? And another voice answerd Saying
Does the voice of my Lord call me again? am I pure thro his Mercy
And Pity. Am I become lovely as a Virgin in his sight who am
Indeed a Harlot drunken with the Sacrifice of Idols does he
Call her pure as he did in the days of her Infancy when She
Was cast out to the loathing of her person. The Chaldean took
Me from my Cradle. The Amalekite stole me away upon his Camels
Before I had ever beheld with love the Face of Jehovah; or known
That there was a God of Mercy: O Mercy O Divine Humanity!
O Forgiveness & Pity & Compassion! If I were Pure I should never
Have known Thee; If I were Unpolluted I should never have
Glorified thy Holiness, or rejoiced in thy great Salvation.
Mary leaned her side against Jerusalem, Jerusalem recieved
The Infant into her hands in the Visions of Jehovah. Times passed on
Jerusalem fainted over the Cross & Sepulcher She heard the voice
Wilt thou make Rome thy Patriarch Druid & the Kings of Europe his
Horsemen? Man in the Resurrection changes his Sexual Garments at will
Every Harlot was once a Virgin: every Criminal an Infant Love!"
In Theology Today (1971), in an article titled Blake on Joseph's Dilemma, William E. Phipps states:
"Blake discerned that the basic teaching of the entire Bible was that love should be displayed without ceasing to the undeserving. He thought that this love could most poignantly be tested in a situation of estrangement provoked by an adulterous conception. Blake's Joseph renewed his trust in one who pleaded for forgiveness after she had betrayed his confidence. Far from believing that his betrothed was forever tainted by past indulgence in illicit coitus, he accepted her baby as his own. The couple mutually witness to the indefatigable nature of true love."