From a homily by Saint John Chrysostom
Make known to us, Lord, the one you choose
In those days, Peter, stood up in the midst of the disciples and said… As the fiery spirit to whom the flock was entrusted by Christ and as the leader in the band of the apostles, Peter always took the initiative in speaking: My brothers, we must choose from among our number. He left the decision to the whole body, at once augmenting the honor of those elected and avoiding any suspicion of partiality. For such great occasions can easily lead to trouble.
Did not Peter then have the right to make the choice himself? Certainly he had the right, but he did not want to give the appearance of showing special favor to anyone. Besides he was not yet endowed with the Spirit.And they nominated two, we read, Joseph, who was called Barsabbas and surnamed Justus, and Matthias. He himself did not nominate them; all present did. But it was he who brought the issue forward, pointing out that it was not his own idea but had been suggested to him by a scriptural prophecy. So he was speaking not as a teacher but as an interpreter.
So, he goes on, we must choose from those men who lived in our company. Notice how insistent he is that they should be eyewitnesses. Even though the Spirit would come to ratify the choice, Peter regards this prior qualification as most important.
Those who lived in our company, to continue the passage, all through the time when the Lord Jesus came and went among us. He refers to those who had dwelt with Jesus, not just those who had been his disciples. For of course from the very beginning many had followed him. Notice how it is written that Peter himself was one of the two who had listened to John, and followed Jesus.
All through the time when the Lord Jesus came and went among us, to continue further, beginning with the baptism of John – rightly so, because no one knew what had happened before that time, although they were to know of it later through the Spirit.
Up to the day, Peter added, on which he was taken up from us – one of these must be made a witness along with us of his resurrection. He did not say “a witness of the rest of his actions” but only a witness of the resurrection. That witness would be more believable who could declare that he who ate and drank and was crucified also rose from the dead. He needed to be a witness not of the times before or after that event, and not of the signs and wonders, but only of the resurrection itself. For the rest happened by general admission, openly; but the resurrection took place secretly, and was known to these men only.
And they all prayed together, saying: You, Lord, know the hearts of men; make your choice known to us. You, not we. Appropriately they said that he knew the hearts of men, because the choice was to be made by him, not by others.
They spoke with such confidence, because someone had to be appointed. They did not say “choose” but make known to us the chosen one; the one you choose, they said, fully aware that everything was preordained by God.They then drew lots. For they did not think themselves worthy to make the choice of their own accord, and therefore they wanted some sign for their instruction.
“Like Christ himself, the apostles were unceasingly bent upon bearing witness to the truth of God. They showed special courage in speaking ‘the word of God with boldness’ (Acts 4:31) before the people and their rulers. With a firm faith they held that the gospel is indeed the power of God unto salvation for all who believe.... They followed the example of the gentleness and respectfulness of Christ” (Vatican II, Declaration on Religious Freedom, 11).
"Lord Jesus, our Savior, let us now come to you: Our hearts are cold; Lord, warm them with your selfless love. Our hearts are sinful; cleanse them with your precious blood. Our hearts are weak; strengthen them with your joyous Spirit. Our hearts are empty; fill them with your divine presence. Lord Jesus, our hearts are yours; possess them always and only for yourself.” (Prayer of Augustine, 354-430)
"The person poor in spirit calls upon God's mercy without knowing how much alms he will receive from God. He does not know whom God will use or by what means He will implement His support. Such a person only knows to expect everything from God, for He is that person's only reliance."
(God Alone Suffices, Third Edition, pg. 131)
Not that they became apostles through being chosen for some distinguished peculiarity of nature, since also Judas was chosen along with them. But they were capable of becoming apostles on being chosen by Him who foresees even ultimate issues. Matthias, accordingly, who was not chosen along with them, on showing himself worthy of becoming an apostle, is substituted for Judas.
(Clement of Alexandria)