St Joseph loved Jesus as a father loves his son and showed his love by giving him the best he had.
St Joseph, caring for the child as he had been commanded, made Jesus a craftsman, transmitting his own professional skill to him. So neighbors of Nazareth will call Jesus both faber and fabri filius: the craftsman and the son of the craftsman. Jesus worked in St Joseph's workshop and by St Joseph's side.
What must St Joseph had been, how grace must have worked through him, that he should be able to fulfill this task of the human upbringing of the Son of God.
St Josemaria Escrriva