This first aspect is an invitation to be “concerned”: the Greek verb used here is katanoein, which means to scrutinize, to be attentive, to observe carefully and take stock of something. We come across this word in the Gospel when Jesus invites the disciples to “think of” the ravens that, without striving, are at the centre of the solicitous and caring Divine Providence (cf. Lk 12:24), and to “observe” the plank in our own eye before looking at the splinter in that of our brother (cf. Lk 6:41). In another verse of the Letter to the Hebrews, we find the encouragement to “turn your minds to Jesus” (3:1), the Apostle and High Priest of our faith. So the verb which introduces our exhortation tells us to look at others, first of all at Jesus, to be concerned for one another, and not to remain isolated and indifferent to the fate of our brothers and sisters. All too often, however, our attitude is just the opposite: an indifference and disinterest born of selfishness and masked as a respect for “privacy”. Today too, the Lord’s voice summons all of us to be concerned for one another. Even today God asks us to be “guardians” of our brothers and sisters (Gen 4:9), to establish relationships based on mutual consideration and attentiveness to the well-being, the integral well-being of others. The great commandment of love for one another demands that we acknowledge our responsibility towards those who, like ourselves, are creatures and children of God. Being brothers and sisters in humanity and, in many cases, also in the faith, should help us to recognize in others a true alter ego, infinitely loved by the Lord. If we cultivate this way of seeing others as our brothers and sisters, solidarity, justice, mercy and compassion will naturally well up in our hearts. The Servant of God Pope Paul VI stated that the world today is suffering above all from a lack of brotherhood: “Human society is sorely ill. The cause is not so much the depletion of natural resources, nor their monopolistic control by a privileged few; it is rather the weakening of brotherly ties between individuals and nations” (On the Progress of Peoples, 66).