It is not that you lack anything from the bible but the basis of Christian mysticism is to look at the word of God in a more spiritual lens. hacing communion and personal intimacy with the spirit, many read his word yet look at how his word is so often used to cherry pick or to take out of context. But if you look at it through the lens of the spirit there is only one interpretation one truth one divine voice in scripture not many and not taken out of context either.
This is what google says about how a Christian mystic studies the bible
Christian mystics approach the Bible with a focus on personal experience and contemplation, seeking to encounter God directly through the text. They often engage in practices like Lectio Divina, which involves slow, meditative reading and reflection on scripture, aiming to internalize its wisdom and foster a deeper relationship with God. This approach emphasizes subjective experience and spiritual transformation over purely intellectual understanding.
Reading the Scriptures slowly, reflecting upon them is not at all sinful. Of course we should try to internalize God's wisdom and that sounds like an honorable practice.
Since that is your stated goal I don't see how the study of Scriptures requires a subjectivity.
My understanding is that we are to take every thought under the captivity of God's Word. A word study on the thoughts we should have is doctrinal perspective with virtues
like love as our main motive.
When we read we naturally engage the intellect. Then we build up on our prior understanding. The intellect is not the only part, because the Bible is spiritual, the Holy Spirit uses it to teach our spirit. Things are to be spiritually understood with the intellect being a necessary part of that. That's my understanding of the general theme.
The more I spend time in God's Word, the more I see the tests in life to apply it. That is where I find the experiential importance. Then the Lord reveals Himself more frequently to me in His Word and in experiences. I often say, that is no coincidence. The Lord is reminding me of His presence and wonderful attributes. That is an honor to behold.