Another word, with possibly a deeper meaning, is sometimes employed, namely, dianoia, which literally means "meditation," "reflection." It is found as synonymous with nous in a good sense, as e.g. in
1 Joh 5:20 (He "hath given us an understanding, that we know him that is true"). Evidently the sense here is the same as in
Ro 12:2, a renovated mind capable of knowing Christ. It may also bear a bad sense, as in
Eph 4:18, where the Gentiles are represented as having "a darkened understanding," or in parallelism with sarx: "the desires of the flesh and of the mind" (
Eph 2:3), and with nous: walking in vanity of mind (nous) and a darkened understanding (dianoia)' in
Eph 4:18. At
times also "heart" and "mind" are joined to indicate human depravity (
Lu 1:51 "He hath scattered the proud in the imagination (dianoia) of their heart"). It is interesting also to know that the Great Commandment is rendered in
Mt 22:37-"Thou shall love the Lord thy God with all thy heart, and with all thy soul (psuche), and with all thy understanding (dianoia) (English Versions of the Bible, "mind")"-though Mark has two renderings in one of which dianoia occurs, and in the other sunesis (
Mark 12:30,
33), though possibly without any psychological refinement of meaning, for the term sunesis occurs elsewhere in conjunction with pneumatikos ("spiritual understanding,"
Col 1:9).
It also stands alone in the sense of an "understanding enlightened from above" (
2Ti 2:7 King James Version: "The Lord give thee understanding (sunesis) in all things"). The history of these terms is interesting, but not of great theological significance.