“Let all you do be done in love.”
1 Corinthians 16:14, BBE

Walking in love is the hallmark of spiritual growth. Apostle Paul had talked about two sets of people- those who were spiritual and those who were carnal, those he called babes in Christ, and he gave their characteristics:
“For ye are yet carnal: for whereas there is among you envying, and strife, and divisions, are ye not carnal, and walk as men?” 1 Corinthians 3:3
He is also saying that those who are carnal, walk as men even though they are born again, their refusal to walk in love equates their refusal to walk in divinity.
The Bible tells us:
“Love is always patient; love is always kind; love is never envious or arrogant with pride. Nor is she conceited,” 1 Corinthians 13:4, ISV
If you walk in love, you are spiritual and you have embraced your divinity, he had told us that when you know the love of Christ, you would be filled with all the fullness of God; you would walk in the fullness of God’s ability:
“And to know the love of Christ, which passeth knowledge, that ye might be filled with all the fulness of God.” Ephesians 3:19