en_tn_condensed/php/01/03.md

I thank...I pray...I give thanks

The word "I" refers to Paul. (See: rc://en/ta/man/translate/figs-singularpronouns)

you

The word "you" refer to the Phillippian believers . (See: rc://en/ta/man/translate/figs-you)

I give thanks for your fellowship in the gospel

Paul was expressing thanks to God that the Philippians were also preaching the gospel like them. "I give thanks to God for you proclaiming the gospel"

I am confident

"I am sure"

he who began

"the God who began" or "God who began"

will complete it

"will continue to complete it"