Reference: 1 Corinthians 13:6-7 NIV
Love does not delight in evil but rejoices with the truth. It always protects, always trusts, always hopes, always perseveres.
God is Love. I can see if God is in something I’m doing by examining if it’s based on love. If love is not in it then it doesn’t matter what other fruits of the Spirit I “believe” I’m operating in. All of the fruits stem from love (aka God). It’s a good motive and mindset test.