God has a calling on each man’s life. Furthermore, He enables men to fulfill their appointed work. Man, however, must be strong and DO the work.
Change often results in fear. As such, it must be met with strength. Failure to do so can breed panic that only God's strength can overcome.
The Bible reveals that Moses was one of Israel’s greatest leaders. To be the leader of the nation of Israel after Moses would have been a daunting task. Yet, this is exactly what God called Joshua to do. Immediately following the death of Moses, the Lord spoke to Joshua and twice instructed him to “be strong and of a good courage” (Joshua 1:6, 9). He also admonished him to “be thou strong and very courageous” (Joshua 1:7). Without godly courage, Joshua would have shied away from the great responsibilities thrust upon him. If he lacked courage, how could he admonish others to trust God and have great courage? Only courageous people can truly lead others during times when courage is necessary.
