Romans 7:14 (a) It refers to anything and everything that pertains to human flesh and the human mind.

Romans 8:7 (a) This describes a mind which thinks only of temporal and physical things.

1 Corinthians 3:1 (a) The Corinthians were still occupied with the things which they could see and handle. They had not yet learned to live in the atmosphere of GOD.

2 Corinthians 10:4 (a) This refers to human weapons such as swords, spears, and other physical force.