Question: where does the bible say study to show thyself approved?
Answer: 2 Timothy 2:15 says from the KJV Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth and or the NIV says Do your best to present yourself to God as one approved, a worker who does not need to be ashamed and who correctly handles the word of truth.