The day of Christ is the day of the Lord
which is 7 years tribulation. I had a post in which I
use Zephaniah 2 to demonstrate the day of the Lord = 7
years tribulation.
Philippians 1:6 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'.
The day of Jesus Christ = the day of the
Lord which is 7 years tribulation. What Paul teaches is
this, carry the good work until the day of Christ/ day
of the Lord / 7 years tribulation arrives. Simply put,
Paul teaches our work stops at the moment the day of
Christ/ the day of the Lord/ 7 years tribulation arrives
because God calls us home right at the moment day of the
Lord begins.
This is another classic example that Paul
teaches pretribulation rapture.
Ray