If you know that he is righteous, you may be sure that everyone who does right has been born of him. See what love the Father has given us, that we should be called children of God; and that is what we are. The reason the world does not know us is that it did not know him. Beloved, we are God's children now; what we will be has not yet been revealed. What we do know is this: when he is revealed, we will be like him, for we will see him as he is. And all who have this hope in him purify themselves, just as he is pure.
Everyone who commits sin is guilty of lawlessness; sin is lawlessness. You know that he was revealed to take away sins, and in him there is no sin. No one who abides in him sins; nobody who sins has either seen him or known him.
The next day he saw Jesus coming toward him and declared, "Here is the Lamb of God who takes away the sin of the world! This is he of whom I said, 'After me comes a man who ranks ahead of me because he was before me.' I myself did not know him; but I came baptizing with water for this reason, that he might be revealed to Israel."
And John testified, "I saw the Spirit descending from heaven like a dove, and it remained on him. I myself did not know him, but the one who sent me to baptize with water said to me, 'He on whom you see the Spirit descend and remain is the one who baptizes with the Holy Spirit.' And I myself have seen and have testified that this is the Son of God."
Saint Augustine of Hippo highlights the humility of John the Baptist, for his self-described role was to prepare the way of the Lord: "John is the voice, but the Lord is the Word who was in the beginning. John is the voice that lasts for a time, but Christ is the Word who lives for ever. Take away the word, the meaning, and what is the voice? The voice without the word strikes the ear but does not build up the heart. When the word has been conveyed to you, does not the sound seem to say: The word ought to grow, and I should diminish? The sound of the voice has made itself heard in the service of the word, and has gone away, as though it were saying: My joy is complete. Let us hold on to the word; we must not lose the word conceived inwardly in our hearts."
Augustine continues: "Because it is hard to distinguish word from voice, even John himself was thought to be the Christ. The voice was thought to be the word. But the voice acknowledged what it was, anxious not to give offence to the word. .. 'I speak out in order to lead him into your hearts, but he does not choose to come where I lead him unless you prepare the way for him.' If he had said, 'I am the Christ,' how readily he would have been believed, since they believed he was the Christ even before he spoke. But he did not say it; he acknowledged what he was. He pointed out clearly who he was; he humbled himself. He saw where his salvation lay. He understood that he was a lamp, and his fear was that it might be blown out by the wind of pride."
John the Baptist is remarkable for his generosity of spirit. This was a very charismatic person who drew people to himself. As a result, he had his own disciples. Yet, in today's gospel we find John directing two of his disciples away from himself and towards the one whom he proclaimed as the Lamb of God. As a result John's two disciples became disciples of Jesus. Having responded to John's invitation to go towards the Lamb of God, they subsequently respond to Jesus' invitation to come and see. John was not possessive about his group of disciples. He encouraged them to go towards someone else who had more to offer them than he had.
The way John related to his disciples shows us humanity as its best, human love as an expression of God's love. To love others in the way God loves them is to want what is best for them, and that will often mean letting them go to others who can help them to grow as human beings and as children of God in ways that we cannot. It is above all the Lord who can help us to grow fully as human beings and as sons and daughters of God. The greatest act of love we can show others is to let them go to the Lord, to direct them to the Lord as John the Baptist directed his own disciples. There was only so much John could do in leading his disciples to Jesus. They had to make their own personal response to the call of Jesus to come and see. There is only so much any of us can do to lead others to the Lord. At some point, we all have to make our own personal response to the Lord's personal call to each of us to come and see, and then to remain with him.