Trinity Sunday offers an opportunity to examine Paul’s idea of life in the Spirit. According to Romans 8:12-17, living in the Spirit means that we don’t live by the “flesh” — which is a word Paul uses to identify that which is dying and passing away, that lifestyle to which we were slaves prior to coming to Christ.
Life in the Spirit means we are God’s children, and as God’s children we form habits as we are led by the Spirit of God. Those habits will bring us into conflict with the world that lives by the “flesh” and we will suffer as Christ suffered because we are living by the Spirit. But, Paul reminds us that if we suffer with Christ, we will also be glorified with Christ, too. Here’s the link to Life in the Spirit.