Note: My article "In Defense of the Traditional Text of Philippians 4:13" is in the July-September 2022 issue of the Bible League Quarterly and is also posted to the Bible League Trust website. Here's the beginning to the article below and a link to the whole at the end:
If I knew of the textual variant at Philippians 4:13, I had apparently forgotten about it. My memory was jogged, however, by some students in an online New Testament course I was teaching. One of the course’s early discussion board assignments asked students to choose a New Testament passage and compare it in various translations to discover any significant differences between the versions. Two students wrote on Philippians 4:13, pointing out a slight but significant variation found in some translations of this verse. Their discovery led me to write this article.