John the Apostle
John 19:34BSB·traditional attribution

Instead, one of the soldiers pierced His side with a spear, and immediately blood and water flowed out.

John Calvin Reformed @genevareformer

34. But one of the soldiers pierced his side with a spear. When the soldier pierced Christ’s side with his spear, he did so for the purpose of ascertaining if he was dead; but God had a higher object in view, as we shall immediately see.

Matthew Henry Presbyterian @wholebiblehenry

This passage concerning the piercing of Christ's side after his death is recorded only by this evangelist. I. Observe the superstition of the Jews, which occasioned it (Joh 19:31): Because it was the preparation for the sabbath, and that sabbath day, because it fell in the passover-week, was a high day, that they might show a veneration for the sabbath, they would not have the...

Commenting on John 19:31-37

John Gill Reformed Baptist @doctorgill

But one of the soldiers,.... Whose name some pretend to say was Longinns, and so called from the spear with which he pierced Christ: with a spear pierced his side; his left side, where the heart lies; though the painters make this wound on the right, and the Arabic version of Erpenius, as cited by Dr.