New King James Version
being confident of this very thing, that He who has begun a good work in you will complete it until the day of Jesus Christ;

King James Bible
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:

American Standard Version
being confident of this very thing, that he who began a good work in you will perfect it until the day of Jesus Christ:

Berean Study Bible
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.

Douay-Rheims Bible
Being confident of this very thing, that he, who hath begun a good work in you, will perfect it unto the day of Christ Jesus.

English Revised Version
being confident of this very thing, that he which began a good work in you will perfect it until the day of Jesus Christ:

World English Bible
being confident of this very thing, that he who began a good work in you will complete it until the day of Jesus Christ.

Young's Literal Translation
having been confident of this very thing, that He who did begin in you a good work, will perform it till a day of Jesus Christ,

Philippians 1:6 Additional Translations ...