To say that God's working in His trusting children is "dynamic" does not mean that it is necessarily overt. The Holy Spirit's indwelling presence in us is often so quietly unassuming that the affirmations of Scripture are the only evidence of it.
"I will give thee the treasures of darkness, and hidden riches of secret places, that thou mayest know that I, the LORD, which call thee by thy name, am the God of Israel" (Isaiah 45:3).
Knowing God for who He is requires much experience that seems to be no experience at all. Familiarity with the heart of another most often proceeds from quiet discourse. In our relationship with God, the quiet can be so still that we may wonder if He is even with us. He is, and He is working in us regardless of what we may feel, or how things may appear. "He which hath begun a good work in you will perform it until the day of Jesus Christ" (Philippians 1:6). The promise is sure, and the dynamic working of God on our behalf is ongoing in this present moment, and forever beyond. Again, however, the only knowledge we have of the "treasures" and "hidden riches" may be the Bible's assurance that such abundance exists. If so, let us rejoice that our Lord is working in the "darkness" and the "secret places" to tell us the most important thing we can ever know. He is telling us who He is.
"The work of righteousness shall be peace; and the effect of righteousness quietness and assurance for ever."