Ezra 2:61-70
61 And of the children of the priests: the children of Habaiah, the children of Koz, the children of Barzillai; which took a wife of the daughters of Barzillai the Gileadite, and was called after their name:
62 These sought their register among those that were reckoned by genealogy, but they were not found: therefore were they, as polluted,o put from the priesthood.
63 And the Tirshathap said unto them, that they should not eat of the most holy things, till there stood up a priest with Urim and with Thummim.
64 The whole congregation together was forty and two thousand three hundred and threescore,
65 Beside their servants and their maids, of whom there were seven thousand three hundred thirty and seven: and there were among them two hundred singing men and singing women.
66 Their horses were seven hundred thirty and six; their mules, two hundred forty and five;
67 Their camels, four hundred thirty and five; their asses, six thousand seven hundred and twenty.
68 And some of the chief of the fathers, when they came to the house of the LORD which is at Jerusalem, offered freely for the house of God to set it up in his place:
69 They gave after their ability unto the treasure of the work threescore and one thousand drams of gold, and five thousand pound of silver, and one hundred priests' garments.
70 So the priests, and the Levites, and some of the people, and the singers, and the porters, and the Nethinims, dwelt in their cities, and all Israel in their cities.
the Building of the Altar
Throughout their history the true Israelites were eager to maintain their genealogy; wherever they were scattered, they carefully guarded their national registers. Each of us should be able to establish his descent and to vindicate his claim to be considered a child of God, a joint-heir with Christ, a partaker in the inheritance which God has promised to them that love Him. If you cannot establish your sonship, you may doubt your right to the spiritual blessings which are a part of the family estates. This is clearly illustrated by the prohibition issued against the eating of the most holy things by the priests whose names were not found in the register. They must wait till the Urim and Thummin attested that they were Israelites indeed. What that witness was in these olden days, the testimony of the Holy Spirit is within us. He witnesses with our spirit that we are born of God.
The first act of the restored Jews was to set up the House of God. For this they gave willingly, and after their ability. The altar was the center of their religion. So the Cross of Jesus is the center of our life and worship, reminding us of His work for us in justification, or His claims in sanctification.