Romans 13:9-10 — For this, Thou shalt not commit adultery, Thou shalt not kill, Thou shalt not steal, Thou shalt not bear false witness, Thou shalt not covet; and if there be any other commandment, it is briefly comprehended in this saying, namely, Thou shalt love thy neighbor as thyself.
Love worketh no ill to his neighbor: therefore love is the fulfilling of the law.
The 10 Commandments are used by Paul to express a general principle.
Love of God is expressed by love to neighbors.
Love is pesonified in 1 Corinthians 13.
James 2:9-11 — But if ye have respect to persons, ye commit sin, and are convinced of the law as transgressors. For whosoever shall keep the whole law, and yet offend in one point, he is guilty of all. For He that said, Do not commit adultery, said also, Do not kill. Now if thou commit no adultery, yet if thou kill, thou art become a transgressor of the law.