לֵב (lêb) (labe) – A form of H3824; the heart; also used (figuratively) very widely for the feelings, the will and even the intellect; likewise, for the center of anything.
Καρδία (kardia) (kar-dee’-ah) – Prolonged from a primary κάρ kar (Latin cor, “heart”); the heart, that is, (figuratively) the thoughts or feelings (mind); also (by analogy) the middle.
לֵבָב (lêbâb) (lay-bawb’) – From H3823; the heart (as the most interior organ); used also like H3820: – bethink themselves, breast, comfortably, courage, understanding.
Heart Conditions According to Hebrews 3:7-13
- Hard Heart – (v 8)
- Wandering Heart- (v 10)
- Unbelieving (Evil) Heart- (v 12)
Evil Heart Conditions
- Stubborn (Ecclesiastes 8:11)
- Madness (Ecclesiastes 9:3)
- Depravity (Jeremiah 17:9)
- Extortion and excess (Matthew 23:25)
- Fountainhead of all evil (Mark 7:21)
- Source of unbelief and covetousness (Hebrews 3:12; 2 Peter 2:14)
Your battle today will not be against “flesh and blood” but the deceitful forces of evil (Ephesians 6:12) and the deceitfulness of indwelling sin (Hebrews 3:13). And these two forces are going to try to use your emotions against you. Therefore, your emotions are a gauge, but they should not be what guides you. Faith in God is what guides you!
Luke 8:15 “And that in the good ground, these are such as in an honest and good heart, having heard the word, hold it fast, and bring forth fruit with patience.” (RV)
 H3820. Strong’s Exhaustive Concordance of the Bible. Heart.
 G2588. Ibid.
 H3824. Ibid.