Because many churches are weak, many fathers have felt the need to be "the pastor" of their home. While parenting IS shepherding, many men begin to believe that their household IS the Church.

However, God has so ordered the world that the household carries the rod, the State carries the sword, and the Church carries the keys. 

Those keys open and close the gates of heaven. "Truly, I say to you, whatever you bind on earth shall be bound in heaven, and whatever you loose on earth shall be loosed in heaven."

The institutional Church, not the Christian home, has the keys, and the Church's ordained ministers are responsible for them.

The keys are wielded through the Sacraments, for they define church membership. In baptism, one enters the Corporate Body. In communion, one eats at the Church-only table, enjoying the privilege of the covenant.

Therefore, fathers do not have authority to baptize their children, nor to give them communion.

It is the institutional Church alone, our heavenly mother, who has been given the authority to bind and loose.