John Owen – How The Holy Spirit Assists Us in Our Praying Weaknesses – Romans 8:26

The matter of our prayer respects the depravation of our nature, and our wants on that account. The darkness and ignorance that is in our understandings; our unacquaintedness with heavenly things, and alienation from the life of God thereby; the secret workings of the lusts of the mind under the shade and covert of this darkness; the stubbornness, obstinacy, and perverseness of our wills by nature, with their reluctancies unto and dislike of things spiritual, with innumerable latent guiles thence arising, — all keeping the soul from a due conformity unto the holiness of God, — are things which believers have an especial regard unto in their confessions and supplications.

Owen, John. The Work of the Holy Spirit in Prayer