It is the objective truth, the body of divinity, the fundamentals of the Faith, Christian theology, the whole counsel of God, the Holy Scriptures. When I was in Junior College, I had an Anglican divinity teacher telling us students that what the church needs today is not doctrine, but love. It doesn't matter whether you have right or wrong views about the Bible, on Christ, or on salvation, as long as you have love, that is the most important because the greatest of these is love. He was dumbfounded. The Bible is very clear.
True love has no part with sin, evil, error, falsehood.
It is quite opposite from Paul's. It is a love that rejoices in iniquity and in error. In the world, love means saying OK to sin. It is tragic that the church today has adopted this definition. Love unites, doctrine divides.