Writing to the Thessalonians, Paul prayed that the God of peace may wholly sanctify us upon Christ's return, and until then that He would watch over us and preserve us. We are not sinless; the flesh is at war with the Spirit, and there is the possibility we will succumb to temptation, but when we take a step back to God, He is quick to meet us. The finishing process will not be completed in our lifetimes, but those who come to know God and His ways and who keep faithing in Him are being transformed and preserved.