18 For observe this too, Holy Brethren, what it is to persevere in crying out. I will speak of what many as well as myself have experienced in Christ's name; for the Church does not cease to give birth to such as these. When any Christian has begun to live well, to be fervent in good works, and to despise the world; in this newness of his life he is exposed to the animadversions and contradictions of cold Christians. But if he persevere, and get the better of them by his endurance, and faint not in good works; those very same persons who before hindered will now respect him. For they rebuke, and hinder, and withstand him so long as they have any hope that he will yield to them.
But if they shall be overcome by their perseverance who make progress, they turn round and begin to say, “He is a great man, a holy man, happy he to whom God has given such grace.” Now do they honour him, they congratulate and bless and laud him; just as that multitude did which was with the Lord. They first hindered the blind men that they might not cry out; but when they continued to cry so as to attain to be heard, and to obtain the Lord's mercy, that same multitude now says, “Jesus calls you.”
And they who a little before “rebuked them that they should hold their peace,” use now the voice of exhortation. Now he only is not called by the Lord who is not in labour in this world. But who is there in this life who is not in labour through his sins and iniquities? But if all labour, it is said to all, “Come unto Me, all you that labour.” Now if this is said to all, why do you ascribe your miscarriage to Him that so invites you? Come. His house is not too narrow for you; the kingdom of God is possessed equally by all, and wholly by each one; it is not diminished by the increasing number of those who possess it, because it is not divided. And that which is possessed by many with one heart, is whole and entire for each one.
Source: Sermons on Selected Lessons of the New Testament (New Advent)