That vail was rent when Jesus died, the Holy Ghost signifying that from that moment access was free into the Holiest. All believers are now welcome to draw near and live in the perpetual presence of God, their Father, even as Jesus did in His earthly life, and as He does in the Heaven of Heavens. This is the clear teaching of Heb 10:19-22 : - " Having therefore, brethren, boldness to enter into the holiest by the blood of Jesus, by a new and living way, which He hath consecrated for us, through the vail, that is to say, His flesh; and having a High Priest over the house of God; let us draw near with a true heart, in full assurance of faith, having our hearts sprinkled from an evil conscience and our bodies washed with pure water."
But there is a deeper significance still. The new and living way was opened through the rending of the flesh of Jesus Christ. As His flesh was rent on the Cross, the Temple vail was rent from the top to the bottom. And it is only when we have chosen the cross, with its shame and death, as the lot of our self-life, that we can enter into that immediate fellowship with God, which is described as "within the vail."
How many there are who never get beyond that dividing vail! They know the brazen altar of Atonement, the laver of daily washing, the golden altar of intercession; but they are never admitted to that blessed intimacy of communion which sees the Shekinah glory between the cherubim and blood-sprinkled mercy-seat.
O Spirit of God, apply the blood to sprinkle our consciences, and the water to cleanse the habits of our daily life; and lead us where our Forerunner and Priest awaits us.