“Let them not depart from thine eyes; keep them in the midst of thine heart.”
King James Version (KJV)
4:19 Darkness - Full of ignorance and error, of uncertainty and confusion, of danger and misery.
4:23 Heart - Thy thoughts, will, and affections. For - From thence proceed all the actions, as of the natural, so of the spiritual life, which lead to eternal life.