Christ's death opened heaven for us

Mark 1:10

"And when he came up out of the water, immediately he saw the heavens being torn open and the Spirit descending on him like a dove."

Mark 15:38

"And the curtain of the temple was torn in two, from top to bottom."

The Temple of God in Jerusalem was a representation of the real Temple of God: Heaven. When Jesus Christ died, the curtain of the temple that veiled the Most Holy place was torn in two.

The meaning is this: As Jesus died the substitutionary death for us, He opened heaven itself, so that the Holy Spirit may descend upon us who believe in Christ, so that God may call all of us His beloved children, with whom He is pleased. Christ opened heaven for us, whereas before it was shut off from as with an iron wall. He shattered it by His blood, by which He paid for the price of our sins. Amen