|Noah Webster's Dictionary|
1. (a.) Adapted to each other; vocally or musically concordant; as, harmonious voices.
2. (a.) Acting together to a common end; agreeing in action or feeling; living in peace and friendship; as, an harmonious family.
3. (a.) Vocally or musically concordant; agreeably consonant; symphonious.
Harmonious (2 Occurrences)
Colossians 1:17 And HE IS before all things and in and through Him the universe is a harmonious whole. (WEY)
1 Peter 3:8 Finally, be all like-minded, compassionate, loving as brothers, tenderhearted, courteous, (See NAS)