The blood purchased us for God. But sin and its effects still arise in us, keeping us from experiencing the Kingdom in its fullness. The blood cleanses the inner man, so our faculties can be alive to God.

Calling on the power of the blood. It's reliable, dependable, whether or not we immediately experience it. It doesn't depend on how we feel, e.g. whether we feel forgiven. We can pray the blood against a sense of condemnation, insecurities, anger, runaway thoughts, moodiness, confusion, fears, depression, divisions. We can pray the blood over troubled situations among our families, at work, in the world; against sickness, danger, etc.

Believing in the power of the blood: do we believe in the utter sufficiency of the blood of the Son of God to cleanse us from sin, or do we wallow in our guilt, hoping somehow to make up for our sin on our own?