Mt 27:51, Mk 15:37-38, Lk 23:45-46, Heb 9:2-3, 10:19-20, Jn 14:6
In the Old Testament, there were the Holy and Most Holy in the tabernacle that God had the priests build. There was a veil between the Holy and the Most Holy, and the high priest could enter the sanctuary through the veil and meet God. (Ex 26:33, Heb 9:2)
Ex 26:33 And thou shalt hang up the vail under the taches, that thou mayest bring in thither within the vail the ark of the testimony: and the vail shall divide unto you between the holy place and the most holy.
Heb 9:2 For there was a tabernacle made; the first, wherein was the candlestick, and the table, and the shewbread; which is called the sanctuary.
When Jesus died on the cross, the veil of the sanctuary was torn. (Matthew 27:51, Mark 15:37-38, Luke 23:45-46)
Matthew 27:51 And, behold, the veil of the temple was rent in twain from the top to the bottom; and the earth did quake, and the rocks rent;
Mark 15:37 And Jesus cried with a loud voice, and gave up the ghost. 38 And the veil of the temple was rent in twain from the top to the bottom.
Luke 23:45 And the sun was darkened, and the veil of the temple was rent in the midst. 46 And when Jesus had cried with a loud voice, he said, Father, into thy hands I commend my spirit: and having said thus, he gave up the ghost.
Jesus tore his own body, the veil, to open the way for us to meet God. (Heb 10:19-20, John 14:6)
Heb 10:19 Having therefore, brethren, boldness to enter into the holiest by the blood of Jesus, 20 By a new and living way, which he hath consecrated for us, through the veil, that is to say, his flesh;
John 14:6 Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me.