Are you Enlightened?
Understanding/ Mind/ Imagination= Greek word (dianoia) the seat of reflective consciousness, comprising the faculties of perception and understanding, and those of feeling, judging and determining. The spirit, way of thinking and feeling.
The eyes of your understanding being enlightened; that ye may know what is the hope of his calling, and what the riches of the glory of his inheritance in the saints, (Ephesians 1:18 KJV)
understanding: The oldest manuscripts, versions read "heart." Compare the contrary state of unbelieving, the heart being in fault ( Eph 4:18 Mat 13:15 ). Translate, "Having the eyes of your heart enlightened" ( Eph 5:14 Mat 4:16 ). The first effect of the Spirit moving in the new creation, as in the original physical creation ( Gen 1:3 2Cr 4:6 ). So THEOPHILUS to AUTOLYCUS (1.3), "the ears of the heart." Where spiritual light is, there is life ( Jhn 1:4 ). The heart is "the core of life," and the fountain of the thoughts; whence "the heart" in Scripture includes the mind, as well as the inclination. Its "eye," or inward vision, both receives and contemplates the light ( Mat 6:22, 23 ). The eye is the symbol of intelligence ( Eze 1:18 ).
"The word 'heart' in Scripture signifies the very core and centre of life, where the intelligence has its post of observation, where the stores of experience are laid up, and the thoughts have their fountain." (Alford)