The First Test

Why is it that so many people never fully enter into the high calling that God has for their lives?

It is because of failure to meet the conditions to be chosen. It is because of failure to pass the tests that follow the call. The call is not guaranteed. It is conditional. Finally receiving God's approval and being chosen to partner with God in His great work is contingent on you passing the tests that He will give you along the way to being chosen and receiving your commission for ministry.