1 Corinthians 2:11
For what human being can understand a man's thoughts except the man's own spirit within him? Just so no one understands the thoughts of God but the spirit of God.
Romans 2:15
for they show that what the Law demands is written on their hearts, and their consciences will testify for them, and with their thoughts they will either accuse or perhaps defend themselves,
2 Corinthians 4:2-6
I disown disgraceful, underhanded ways. I refuse to practice cunning or to tamper with God's message. It is by the open statement of the truth that I would commend myself to every human conscience in the sight of God.
Hebrews 4:12-13
For the message of God is a living and active force, sharper than any double-edged sword, piercing through soul and spirit, and joints and marrow, and keen in judging the thoughts and purposes of the mind.
1 John 3:19-21
From that we can be sure that we are on the side of the truth, and satisfy our consciences in God's sight,