It is not the level of our spirituality that we can depend on. It is God and nothing less than God, for the work is God's and the call is God's and everything is summoned by Him and to His purposes, the whole scene, the whole mess, the whole package - our bravery and our cowardice, our love and our selfishness, our strengths and our weaknesses. The God who could take a murderer like Moses and an adulterer like David and a traitor like Peter and make them strong servants of His is a God who can also redeem savage Indians, using the instruments of His peace a conglomeration of sinners who sometimes look like heroes and sometimes like villains, for "we are no better than pots of earthenware to contain this treasure [the revelation of the glory of God in the face of Jesus Christ], and this proves that such transcendent power does not come from us, but is God's alone" (2corinthians 4:7 NEB)
We are not always sure where the horizon is. We would not know which end is up were it not for the shimmering pathway of light falling on the white sea. The One who laid earth's foundations and settled its dimensions knows where the lines are drawn. He gives all the light we need for trust and obedience.
from Through Gates of Splendor by Elisabeth Elliot
The author and her husband were providentially led to work in Ecuador with the hope of sharing the truth of our Creator's Son, Jesus, with savage Indians, and God allowed them that grace along with many other couples He assembled to do the same. This grace included sacrificing many of their lives.