Little children, we must not love with word or speech, but with truth and action. (Holman Christian Standard Bible)
My little sons, love we not in word, neither in tongue, but in work and truth. (Wycliffe)
But whoso hath this world’s good, and seeth his brother have need, and shutteth up his bowels of compassion from him, how dwelleth the love of God in him? (King James Version)
Jesus says exactly the same thing as His disciple says. Jesus says that the least kindness you show to the least is a kindness you show to Him – if you visit the prisoner, you visit Jesus. If you feed the homeless man, you feed Jesus. If you adopt the orphan, you adopt our Lord. And so on.
If we talk love but never show love, then the love of God is not in us. Worse, if we talk love and show hate, then our spirit is not of the Holy Spirit but of our own corrupted nature. We are like pigs remaining in our own mud and corn husks.
God calls us to love in action, not in talk.