3 occurrences across the corpus

King James Version

2 Corinthians 7:1

Having therefore these promises, dearly beloved, let us cleanse ourselves from all filthiness of the flesh and spirit, perfecting holiness in the fear of God.

Ephesians 4:12

For the perfecting of the saints, for the work of the ministry, for the edifying of the body of Christ:

OT Pseudepigrapha

The Letter of Aristeas 6:26

All these ordinances were made for the sake of righteousness to aid the quest for virtue and the perfecting of character.