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:
Berean Study Bible (BSB) - Philippians 1:6 >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.
Textus Receptus (TR) - Philippians 1:6 >πεποιθὼς αὐτὸ τοῦτο, ὅτι ὁ ἐναρξάμενος ἐν ὑμῖν ἔργον ἀγαθὸν ἐπιτελέσει ἄχρις ἡμέρας Ἰησοῦ Χριστοῦ·