Albert Barnes Commentary Psalms 119:39

"Turn away my reproach whereof I am afraid; For thine ordinances are good." — Psalms 119:39 (ASV)

Turn away my reproach - The reproach which is likely to come upon me from being a professed worshipper of God. In all ages good men have been exposed to this reproach.

Which I fear - Which I have reason to apprehend will come upon me. This may not mean that he was personally afraid of it, but merely that he had reason to apprehend that he was exposed to it. The prayer is proper, for there is nothing which our nature makes us shrink back from more than reproach. Compare (Psalms 119:22); (Psalms 69:9), (Psalms 69:20); (Romans 15:3); (2 Corinthians 12:10). The word reproach in the original is the same which denotes shame or dishonor.

For your judgments are good - Your statutes; your laws. I know they are good. I feel that I desire to obey them. I pray, therefore, that obedience on my part to that which is good may not subject me to shame; that people may see that your laws are good, and that it is not a matter of reproach to obey them.