Biblical evidence for the discipline of celibacy can be found in both the Old and the New Testaments. In the Old, Jeremiah was forbidden by God to take a wife in order to enable him to fulfill his ministry better. "The word of the Lord came to me: 'You shall not take a wife, nor shall you have sons or daughters in this place'" (Jer. 16:1-2).
Also in the Old Testament, God asked even married couples to practice celibacy on certain occasions. For example, Moses asked the Israelites to abstain from marital intimacy while he ascended Mount Sinai (Ex. 20:15), and Jewish tradition attests that he remained celibate for life following the command of Exodus 9:15 and Deuteronomy 5:28. The Lord also asked that the priests refrain from sexual relations with their wives during their time of service in the temple. In yet another example, the priests ordered King David and his people to abstain from marital relations on the occasion of eating the holy bread (1 Sam. 21:4).
In all these instances, there is a theme of abstaining from marital relations due to the presence of something very holy. It is not that the marital act is sinful, but that when one is in such proximity to God, it is right to offer him an undivided mind, heart, and body. If it was fitting under the Old Covenant to serve the temple, to approach God, and receive the holy bread with a consecrated body, it is no surprise that permanent celibacy is fitting for a Roman Catholic priest, since his priestly service is continual.
In the Gospel of Matthew, Jesus states, "Some are incapable of marriage because they were born so; some, because they were made so by others; some because they have renounced marriage for the sake of the kingdom of heaven. Whoever can accept this ought to accept it" (19:12 NAB). This is an invitation from Christ to live as he did, and there can be nothing unacceptable in that.
Paul recognized the wisdom in this, and encouraged celibacy in order to free a man to be anxious about the things of the Lord and to serve him undividedly (1 Cor 7:8,32-35). In his words, "To the unmarried and the widows I say that it is well for them to remain single as I do. . . . I want you to be free from anxieties. The unmarried man is anxious about the affairs of the Lord, how to please the Lord; but the married man is anxious about worldly affairs, how to please his wife, and his interests are divided. And the unmarried woman or girl is anxious about the affairs of the Lord, how to be holy in body and spirit; but the married woman is anxious about worldly affairs, how to please her husband. I say this for your own benefit, not to lay any restraint upon you, but to promote good order and to secure your undivided devotion to the Lord. . . . he who marries his betrothed does well; and he who refrains from marriage will do better" (1 Cor. 7:8, 32-35, 38).
Jer 16:1-5 gives some enlightening to the situation
The word of the LORD came to me: 2"You shall not take a wife, nor shall you have sons or daughters in this place. 3For thus says the LORD concerning the sons and daughters who are born in this place, and concerning the mothers who bore them and the fathers who fathered them in this land: 4(A) They shall die of deadly diseases.(B) They shall not be lamented, nor shall they be buried.(C) They shall be as dung on the surface of the ground.(D) They shall perish by the sword and by famine,(E) and their dead bodies shall be food for the birds of the air and for the beasts of the earth.
The emphasis in this passage is that this 'place' or the 'land' was not condusive to the will of the lord; not that marriage was a bad thing.
Where in the Bible does it say that clerical celibacy must be demonstrated by the Bible?
Where in the Bible does the Bible provide the canon of the Bible?
These kinds of questions beg much larger questions that are rarely if ever asked by "Bible alone" Christians.