John 19:35-37

The man who saw it has given testimony, and his testimony is true. He knows that he tells the truth, and he testifies so that you also may believe. These things happened so that the scripture would be fulfilled: "Not one of his bones will be broken," and , as another scripture says, "They will look on the one they have pierced."

The man who saw it has given testimony 
Luke 24:48  "You are witnesses of these things."
Acts 1:8  "But you will receive power when the Holy Spirit comes on you; and you will be my witnesses in Jerusalem, and in all Judea and Samaria, and to the ends of the earth."
Acts 5:32  "We are witnesses of these things, and so is the Holy Spirit, whom God has given to those who obey him."
Acts 13:30-31  "But God raised him from the dead, and for many days he was seen by those who had traveled with him from Galilee to Jerusalem. They are now his witnesses to our people."

and his testimony is true 
John 15:27  "And you also must testify, for you have been with me from the beginning."
John 21:24  This is the disciple who testifies to these things and who wrote them down. We know that his testimony is true.

These things happened so that the scripture would be fulfilled: "Not one of his bones will be broken," 
Exodus 12:46  "It (the Passover lamb) must be eaten inside the house; take none of the meat outside the house. Do not break any of its bones."
Numbers 9:12  "They must not leave any of it (the Passover lamb) till morning or break any of its bones. When they celebrate the Passover, they must follow all the regulations." 
Psalm 34:20  ... he protects all his bones, not one of them will be broken.

and, as another scripture says, "They will look on the one they have pierced." 
Zechariah 12:10  "And I will pour out on the house of David and the inhabitants of Jerusalem a spirit of grace and supplication. They will look on me, the one they have pierced, and they will mourn for him as one mourns for an only child, and grieve bitterly for him as one grieves for a firstborn son."
Revelation 1:7  "Look, he is coming with the clouds," (Daniel 7:13) and "every eye will see him, even those who pierced him;" and all peoples on earth "will mourn because of him." (Zechariah 12:10) So shall it be! Amen.

(parentheses are mine)

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