When you understand the Word of God and have faith in His salvation, it begins to change who you are as an individual. This transformation takes place in the heart. Paul mentions the breastplate of righteousness as a part of God’s armor. The actual breastplate of a Roman soldier would protect the chest and the upper torso in battle. It protects the internal organs, the ribs, and of course the most vital organ, the heart. The heart that Paul is referring to though, is not the physical heart but the heart that ascertains who you are as a person. Your heart is what makes you a one of a kind individual. The heart of a person is where everything comes from such as personalities, emotions, character, and other elements that can make up a person’s nature. God wants you to change your nature. He wants you to change the person you are now to one of righteousness. He wants you to change your mindset, your morals and the standards you live by. He wants you to put on the breastplate of righteousness by living with a righteous heart that thrives under righteous values.
With all the distractions the world puts in front of you, you have to keep your spiritual heart pumping. If your spiritual heart stops pumping, the Holy Spirit within you stops flowing. A righteous heart keeps the Holy Spirit alive inside of you. Your body becomes a temple for the Holy Spirit. So when God’s Spirit thrives through you, you begin to notice changes in your actions. So when Paul tells you to put on the breastplate of righteousness, he is saying to uphold the righteous values that you need to live by, no matter what the circumstances are. So how do we have a righteous heart? It is done through faith and by living under the values that bring glory to the Lord in everything you do. Living for the Lord means you have left the old you by being born again. We are all born in the flesh but the new you, is born in the Spirit!
Bible Challenge: What is the difference between your heart, soul, and spirit?
Look up these three Greek terms (Psyche, Pneuma, Kardia) in any concordance and answer the question above. This challenge can help you get an understanding of how these terms correlate with each other.