We’ve been discussing marriage as covenant, as a vehicle communicating Christ, and as an icon of the Trinity. Yet mortal, flawed, human persons enter into the relationship. We are all in a state of gradual movement toward an ideal:
122. We should not however confuse different levels: there is no need to lay upon two limited persons the tremendous burden of having to reproduce perfectly the union existing between Christ and his Church, for marriage as a sign entails “a dynamic process…, one which advances gradually with the progressive integration of the gifts of God”.(Familiaris Consortio 9)
Remember that Amoris Laetitia is online here.