God: "I looked for someone to take a stand for me, and stand in the gap" (Ezekiel 22:30)
New birth is known by its fruits, not by a decision. The most important fruit is hunger for God Himself. Effective parents assume this, and patiently wait for sustained fruit before they render a verdict.
Being filled with the Spirit is not an optional accessory to the Christian life. It is the hub of walking consistently with God… To not be “filled” (directed and empowered) with the Spirit is to disobey a direct command of Scripture and is therefore sin.