William Burkitt on 2 Corinthians 11:31

Observe here, How the apostle, in a most awful and solemn manner, appeals to the all-knowing and heart-searching God, that the foregoing account of his sufferings for Christ and his gospel was the exact truth and no lie. He calls God to bear witness to the certainty of all that he had said of him the Father of our Lord Jesus, who is blessed for evermore, affords an undeniable argument to prove the Godhead of Christ; this doxology, blessed for evermore, being a term of honour usually annexed by the Jews at the naming of God.