6 being confident of this, that he who began a good work in you will carry it on to completion until the day of Christ Jesus.

Read Philippians 1:6 Using Other Translations

Being confident of this very thing, that he which hath begun a good work in you will perform it until the day of Jesus Christ:
And I am sure of this, that he who began a good work in you will bring it to completion at the day of Jesus Christ.
And I am certain that God, who began the good work within you, will continue his work until it is finally finished on the day when Christ Jesus returns.