Meaning of Harmonious: [https://dictionary.cambridge.org/us/dictionary/english/harmonious]
Having different parts that are combined in a pleasing way
Live in harmony with one another. Do not be proud, but be willing to associate with people of low position. Do not be conceited. Do not repay anyone evil for evil. Be careful to do what is right in the eyes of everyone. If it is possible, as far as it depends on you, live at peace with everyone… do not be overcome by evil, but overcome evil with good.
I had a friend that used to say, holiness is harmony with God. I thought that was a pretty good explanation. It doesn’t matter how many “righteous acts” we try to perform. It is the things that we do and who we are, the totality of our being in agreement and aligned with God. In other words, acting the way he acts, feeling the way he feels and having his perspective. It means we are not doing things that are “out of tune” with God the way instruments and voices have to harmonize in a song. When our lives are in harmony with God we make beautiful music together.
The Vocabulary Dictionary puts it this way,
Harmony is the sound of things that go together well — people singing in harmony are in tune with each other. When we live by God’s word and are directed by the Holy Spirit it is impossible to be out of harmony. Here is what Romans 8:14 says in The Passion Translations about being led by the Holy Spirit:
The mature children of God are those who are moved by the impulses of the Holy Spirit. And you did not receive the “spirit of religious duty,” leading you back into the fear of never being good enough. But you have received the “Spirit of full acceptance,” enfolding you into the family of God. And you will never feel orphaned, for as he rises up within us, our spirits join him in saying the words of tender affection, “Beloved Father!” For the Holy Spirit makes God’s fatherhood real to us as he whispers into our innermost being, “You are God’s beloved child!”
Heavenly Father, thank you for causing me to be in harmony with you through your spirit. Thank you for causing me to walk in agreement with The Spirit the Spirit of the Lord, The Spirit of Wisdom and Understanding, The Spirit of Counsel and Might, The Spirit of Knowledge and the reverential obedience of the Lord. Father because I am walking in harmony with you all things are working together for my good. I thank you for causing me to walk in the good, acceptable and perfect will of God at all times. Thank you for giving me the discernment to know how to walk harmoniously with you. Thank you for lifting my head up above my enemies and causing me to triumph in every way in Jesus name. Amen.