Remember the Scripture passage about the dishonest steward in Luke chapter 8? Jesus commends him for his shrewdness. He wasn't praising his evil acts, but the steward was cunning and planned ahead. Too many Christians think sitting on their hands and letting God do everything is a virtue. But we would do well to remember that quietism, the belief in complete passivity in moral matters, annihilating the will and leaving all to God, is a heresy.
We are called to be as shrewd as serpents and as gentle as doves. So preparing with a zeal equal to those who are undermining the faith is a moral responsibility. Pray for those preparing for the synod who love God with their whole heart, mind, soul and strength, that God will give them all they need to defend Holy Mother Church against her internal enemies. God knows there are plenty of them!