Numbers 4: 5 - 6: And when the camp setteth forward, Aaron shall come, and his sons, and they shall take down the covering vail, and cover the ark of testimony with it: And shall put thereon the covering of badgers' skins, and shall spread over it a cloth wholly of blue, and shall put in the staves thereof.
The Ark of the Covenant had three coverings when it was in transit: the first covering was the vail; the second covering was badger skins; the third covering was a blue cloth.
Three pulls were needed to remove the three coverings, to reveal the Ark of the Covenant.
The Ark of the Covenant was a type of Christ.
Brother Branham’s ministry had three pulls (signs in the hand, discernment and the spoken Word) to reveal Christ to the Bride.