<p>13:35- see on Acts 4:13.</p><p><i>By this shall all men know you are my disciples- if you have love for one another</i>- The Lord has just redefined &quot;love&quot; as the love He was showing by dying for them, epitomized in the foot washing incident. If His followers could do this for each other, then the witness would be made to &quot;all men&quot;. Christian love must be distinctively different from any other profession of 'love' made by others. That is a great challenge; and it is only capable of fulfilment by being motivated by the Lord's love. It will be a witness powerful enough to convert the world. Indeed, this is John&rsquo;s version of the great commission- see on Lk. 22:32. The Lord&rsquo;s death was to result in a unity between us that would lead the world to understand Him and the love the Father has for Him (Jn. 17:21,23); and yet through the loving unity of believers, the world knows <i>them</i>, that they are His disciples (Jn. 13:35). We are an exhibition to this world of the relationship between the Father and Son. Hence our behaviour is so crucial. For if we are divided and unloving, this is the image of the Father and Son which we are presenting. It is also therefore sadly true that if all men do not see love for one another, then we are in fact not the Lord's disciples. This makes so many forms of cranky denominationalism self-condemned as non-Christian.</p>