Christians are disciples, after all, and we therefore need to be disciplined. As biblical pastors, teachers, and mentors lead us we realize that we aren't quite as spiritually fit as we thought we were. When we face a challenge or obstacle, we find our strength and stamina are weak. We need practice. Trials in life, or unexpected temptations often reveal that we do not have the stamina or aptitude in God's Word that we may have thought we did.