According to evangelical Christian teaching, the author of Romans 11:33 is the apostle Paul. He is widely recognized as the author of the book of Romans, which is considered one of the most important epistles of the New Testament. The apostle Paul was a prolific writer, and he authored several other letters included in the New Testament.

Paul was a Jewish scholar who became one of the foremost leaders of the early Christian church. He was initially a fierce opponent of the Christian faith, but he had a dramatic conversion experience on the road to Damascus, where he encountered the risen Jesus Christ. After this life-changing experience, Paul devoted himself to spreading the Gospel message throughout the Roman Empire.

Romans 11:33 is considered one of the most profound and eloquent expressions of praise to God in all of Scripture. The verse reads, “Oh, the depth of the riches and wisdom and knowledge of God! How unsearchable are his judgments and how inscrutable his ways!” In this verse, Paul is acknowledging the limitless nature of God’s wisdom and understanding, and expressing awe and reverence for God’s goodness and providence.

Overall, evangelical Christians view the authorship of Romans 11:33 and the entire book of Romans as a testament to the inspiration and authority of Scripture, and a vital part of the Christian faith.