Philippians 4:11-13 teaches contentment and strength through faith. It says, "I have learned to be content whatever the circumstances. I know what it is to be in need, and I know what it is to have plenty. I have learned the secret of being content in any and every situation, whether well fed or hungry, whether living in plenty or in want. I can do all this through him who gives me strength." This passage emphasizes finding peace and strength in God, regardless of life's circumstances.