Kardia - Strongs #2588 See Speaking the Truth in Love
Definition
the heart
that organ in the animal body which is the centre of the circulation of the blood, and hence was regarded as the seat of physical life
denotes the centre of all physical and spiritual life
the vigour and sense of physical life
the centre and seat of spiritual life
the soul or mind, as it is the fountain and seat of the thoughts, passions, desires, appetites, affections, purposes, endeavours
of the understanding, the faculty and seat of the intelligence
of the will and character
of the soul so far as it is affected and stirred in a bad way or good, or of the soul as the seat of the sensibilities, affections, emotions, desires, appetites, passions
of the middle or central or inmost part of anything, even though inanimate
Thayer's and Smith's Bible Dictionary
Looking at the use of the word heart in Ephesians and comparing it to Colossians and Philippians:
1. Eph 3:17 - That Christ may dwell in your ❤❤ by faith; that ye, being rooted and grounded in love,
2. Eph 4:18 - Having the understanding darkened, being alienated from the life of God through the ignorance that is in them, because of the blindness of their ❤:
3. Eph 5:19 - Speaking to yourselves in psalms and hymns and spiritual songs, singing and making melody in your ❤ to the Lord;
4. Eph 6:5 - Servants, be obedient to them that are your masters according to the flesh, with fear and trembling, in singleness of your ❤, as unto Christ;
5. Eph 6:22 - WhomI have sent unto you for the same purpose, that ye might know our affairs, and that he might comfort your ❤❤.
❤
2. Philippians 4:7 - And the peace of God, which passeth all understanding, shall keep your ❤❤ and minds through Christ Jesus.
❤
2. Colossians 3:15 - And let the peace of God rule in your ❤❤, to the which also ye are called in one body; and be ye thankful.
3. Colossians 3:16 - Let the word of Christ dwell in you richly in all wisdom; teaching and admonishing one another in psalms and hymns and spiritual songs, singing with grace in your ❤❤ to the Lord.
4. Colossians 3:22 - Servants, obey in all things your masters according to the flesh; not with eyeservice, as menpleasers; but in singleness of ❤, fearing God:
5. Colossians 4:8 - WhomI have sent unto you for the same purpose, that he might know your estate, and comfort your ❤❤;