"Rest" is the reconciliation of man's will with the Will of God, with His Commandments by their fulfillment, leading man to find righteousness, tranquility, peace with his conscience, with the world around him, with each other and among all peoples.
"Peace" is the absence in man of inner struggle, of contradictions between his conscience and reason, between flesh and spirit, a state of peace of mind, confidence in the right choice of life's path, faithfulness of justification before God.