A Scarlet Thread is a hint in the O.T. that gave us a picture of what the Messiah would be like. While not a picture of Jesus Himself, the book of Ezra does paint an allegorical picture of the gospel invitation and the Christian’s walk in the face of enemies.
In this book, we see Christ as the ruler of kings. He moves earthly monarchs to fulfill His will. Behind the movements of men and nations, there is the unseen and omnipotent hand of God. Three pagan kings are presented in this book, each one doing what he desires to do, yet fulfilling the purposes of God in their plans. God stirs up the spirits of those people by regeneration and makes them willing. God raises them out of slavery to sin into the liberty of the children of God. This is how the heavenly Canaan will be filled. God first calls, then He enables us to respond. Some choose to stay in Babylon, unwilling to leave behind the familiar world they’ve always known.
Cyrus’ proclamation is itself a picture of the general call of the gospel for people to leave this world and go to the Promised Land. The bringing back of the Jews from captivity represents the redemption of sinners by Jesus Christ.
An account is kept of the names of the people of the kingdom. Likewise our names are written in the Book of Life. “And anyone not found written in the Book of Life was cast into the lake of fire.” Rev. 20:15
Some who had no evidence of their priesthood were rejected. Ezra 3:62 If people have no evidence that by the new birth they are priests to God, through Jesus Christ, they have no rights to the comforts and privileges of Christians. See the parable of the marriage feast in Matthew 22:11-13.
When the tabernacle was being constructed in the wilderness, the people gave more than was needed, and had to be restrained from giving. When the first temple was constructed, the people gave generously at all stages of the construction and later for the worship. Now again, they are giving (Ezra 2:69) 25 tons of silver, 4 tons of gold, and 100 priestly garments.
In the New Covenant, we are not living in a theocracy. Our taxes support our society, and our givings are never referred to as a tithe, but only ever as offerings and gifts. We are to give cheerfully, willingly, deliberately, as God has prospered us.