Jeremias xxxi, 22: How long wilt thou be dissolute in deliciousness, O wandering daughter? [i.e. Israel] for the Lord hath created a new thing upon the earth: A WOMAN SHALL COMPASS A MAN.
Matthew 1, 18-25:
18 Now the generation of Christ was in this wise. When as his mother Mary was espoused to Joseph, before they came together, she was found with child, of the Holy Ghost.
19 Whereupon Joseph her husband, being a just man, and not willing publicly to expose her, was minded to put her away privately.
20 But while he thought on these things, behold the Angel of the Lord appeared to him in his sleep, saying: Joseph, son of David, fear not to take unto thee Mary thy wife, for that which is conceived in her, is of the Holy Ghost.
21 And she shall bring forth a son: and thou shalt call his name Jesus. For he shall save his people from their sins.
22 Now all this was done that it might be fulfilled which the Lord spoke by the prophet, saying:
23 Behold a virgin shall be with child, and bring forth a son, and they shall call his name Emmanuel, which being interpreted is, God with us.
24 And Joseph rising up from sleep, did as the angel of the Lord had commanded him, and took unto him his wife.
25 And he knew her not till she brought forth her first born son: and he called his name Jesus.
{Nothing implied about aftwerwards by this in the least. Virginity references next.}
Its observance possible:
Matthew 19, 10-12:
10 His disciples say unto him: If the case of a man with his wife be so, it is not expedient to marry.
11 Who said to them: All men take not this word, but they to whom it is given.
12 For there are eunuchs, who were born so from their mothers womb: and there are eunuchs, who were made so by men: and there are eunuchs, who have made themselves eunuchs for the kingdom of heaven. He that can take, let him take it.
When vowed to be kept:
1 Timothy v, 11-12:
11 But the younger widows avoid. For when they have grown wanton in Christ, they will marry:
12 Having damnation, because they have made void their first faith.
Virginity, its excellence:
1 Corinthians, vii, 7-8, 17, 25-27, 32-34, 37-40:
7 For I would that all men were even as myself. But every one hath his proper gift from God: one after this manner, and another after that.
8 But I say to the unmarried and to the widows: It is good for them if they so continue, even as I.
17 But as the Lord hath distributed to every one, as God hath called every one: so let him walk. And so in all churches I teach.
25 Now, concerning virgins, I have no commandment of the Lord: but I give counsel, as having obtained mercy of the Lord, to be faithful.
26 I think therefore that this is good for the present necessity: that it is good for a man so to be.
27 Art thou bound to a wife? Seek not to be loosed. Art thou loosed from a wife? Seek not a wife.
32 But I would have you to be without solicitude. He that is without a wife is solicitous for the things that belong to the Lord: how he may please God.
33 But he that is with a wife is solicitous for the things of the world: how he may please his wife. And he is divided.
34 And the unmarried woman and the virgin thinketh on the things of the Lord: that she may be holy both in body and in spirit. But she that is married thinketh on the things of the world: how she may please her husband.
37 For he that hath determined, being steadfast in his heart, having no necessity, but having power of his own will: and hath judged this in his heart, to keep his virgin, doth well.
38 Therefore both he that giveth his virgin in marriage doth well: and he that giveth her not doth better.
39 A woman is bound by the law as long as her husband liveth: but if her husband die, she is at liberty. Let her marry to whom she will: only in the Lord.
40 But more blessed shall she be, if she so remain, according to my counsel. And I think that I also have the spirit of God.
Apocalypse xiv, 3-5::
3 And they sung as it were a new canticle, before the throne and before the four living creatures and the ancients: and no man could say the canticle, but those hundred forty-four thousand who were purchased from the earth. 4 These are they who were not defiled with women: for they are virgins. These follow the Lamb whithersoever he goeth. These were purchased from among men, the firstfruits to God and to the Lamb.
5 And in their mouth there was found no lie: for they are without spot before the throne of God.