Mostly in those years when I accepted Charismatic theology (but also in later years), I considered the Bible to be less than satisfying. Oh, with my mouth I'd insist that Scripture possessed everything Christians needed to know, but when I struggled with personal issues, I'd search its pages and find my heart yearning for something "deeper." Prophecy, psychology, or "words of knowledge" promised to augment God's Word.
My battle to tame my temper provides an example of my dissatisfaction with Biblical principles. I dutifully read all the passages condemning anger, as well as the ones encouraging self-control. Yet they didn't seem to offer guidance on how to keep from exploding into fits of rage when I'd feel irritated or threatened. I believed I needed to understand childhood trauma that caused my root of anger. Additionally, I went through "deliverance" from a demon of anger that had supposedly possessed me. I read Christian books and articles, looking for mystical experiences with Jesus that would free me from my anger and transform me into a woman of inexhaustible patience.
What I really needed, of course, was to obey the Holy Spirit, Who has given me a spirit of self-control (2 Timothy 1:7). I could choose to walk in the Spirit's ways, which He outlined in the Bible, or I could choose to walk in the flesh. Walking in the Spirit doesn't erase my fleshly feelings of indignation, but it trusts the Spirit's power to help me respond to irritations as He would have me respond.
God's Word not only teaches us what the Lord expects, but it points us to the power of God's Spirit, Who enables us to obey. We need no "deeper" knowledge, nor do we need psychology. Scripture guides us to the risen Christ, Who in turn raises us from bondage to our sin natures. Really, what more could we possibly need?