Matthew 15:28

Then Jesus answered her, “Woman, your faith (your personal trust and confidence in My power) is great; it will be done for you as you wish.” And her daughter was healed from that moment.

The more we read, study and listen to the bible, the stronger our faith.  The more we trust God at His word in the bible and do and obey, the greater our faith will grow.  Just like anything in life, we must practice to get better.  Faith practiced, and God’s word believed without any doubt, and that mountain will move.