Ye yourselves are taught of God to love one another. . . . We beseech you, brethren, that ye increase more and more.
Again, we have the motivating force behind our ability to love others. It is God Himself working in us. The Apostle encouraged the believers in Thessalonica to be loving Christians, and to let their love show, and grow. That is our prayer too, that each of us would be more loving, and that the love of God which is shed abroad in our hearts would show on the outside.