1) 1 John 3:19-22; Assurance, hearts, condemnation, God and
    confidence.

2) Proverbs 20:27; “The spirit of man is the lamp of the Lord, searching
    all the innermost  parts of his being.”

3) Romans 1:19; “Because that which is known about God is evident
    within them; for God made it evident to them” (The underline is
    mine).

4) Romans 2:14-15; The conscience, bearing witness, accusing and
    defending.

5) Romans 9:1; The conscience bearing witness in the Holy Spirit.

6) John 16:13; The Holy Spirit guides us into all truth.  Also 1 Corinthians
    2:10-16.  Compare 1 Samuel 10:6-7.

7) Psalm 21:2; God and the heart’s desire.