That is, ultimately, faith is not an intellectual exercise. It is so much more than mere belief. Faith is a much richer word that implies a living relationship. I depend on her. To have faith in God, then, implies a whole range of ways that one actively relates to God.
Faith is a living, dynamic relationship that is more akin to trust than anything else.
So when we talk about growth in faith, we're talking about more than growth in understanding. We're talking about growth in relationship. To grow in faith is to have our relationship with God grow. One way for that relationship to grow is for us consciously to spend time doing those things through which others have encountered God. That is, we can act out Christian practices like worship, prayer, hospitality, confession, forgiveness.