Newness - Vine's Expository Dictionary of New Testament Words
Newness[ 1,,G2538, kainotes ]
akin to kainos, is used in the phrases
(a) newness of life," Romans 6:4, i.e., life of a new quality (See NEW, No. 1); the believer, being a new creation (2 Corinthians 5:17), is to behave himself consistently with this in contrast to his former manner of life;
(b) "newness of the spirit," RV, Romans 7:6, said of the believer's manner of serving the Lord. While the phrase stands for the new life of the quickened spirit of the believer, it is impossible to dissociate this (in an objective sense) from the operation of the Holy Spirit, by whose power the service is rendered.