Paul was sucinct in his appraisal of love. After he gives us a full spectrum view of just what love is, he tells us what he (and we by extension) are without love. Our orthodoxy may be beyond question. Our theology may be spot on and our knowledge of the Liturgy may be first rate. Why, we may even be totally conversant in the 39 Articles.
All of this said, if we lack Love, we're of no effect. We're mere windbags who do little more than contribute to the greenhouse gases.