And also in 2 Corinthians 11:31, which they translate,
The God and Father of our Lord Jesus Christ, ὁ ὢν εὐλογητὸς εἰς τοὺς αἰῶνας ("who is blessed forevermore").
2 Corinthians 11:31 (AV)
The God and Father of our Lord Jesus Christ,
which is blessed for evermore,
knoweth that I lie not.
This looks akin to Romans 9:5.
The blessing is for ever upon Christ.
Romans 9:5 (AV)
Whose are the fathers,
and of whom as concerning the flesh Christ came,
who is over all,
God blessed for ever.