Put your finger here

Thickness of crucifixion nails and spear head size?

How thick the nails that penetrated the hand and feet of our Lord Jesus Christ? And they brought him to the place called Golgotha (which means Place of a Skull). And they offered him wine mixed with myrrh, but he did not take it. And they crucified him - Mark 15:22-24a

How wide the spear head that pierced our Lord Jesus Christ? But one of the soldiers pierced his side with a spear, and at once there came out blood and water - John 19:34

No historical evidence exists to know about the thickness of crucifixion nails and the size of spear head. But after the resurrection, Jesus Christ himself shared the details with his disciples, from that we can understand the thickness of crucifixion nails and spear head size and the suffering of Lord in the Cross - Now Thomas, one of the twelve, called the Twin, was not with them when Jesus came. So the other disciples told him, “We have seen the Lord.” But he said to them, “Unless I see in his hands the mark of the nails, and place my finger into the mark of the nails, and place my hand into his side, I will never believe.” Eight days later, his disciples were inside again, and Thomas was with them. Although the doors were locked, Jesus came and stood among them and said, “Peace be with you.” Then he said to Thomas, “Put your finger here, and see my hands; and put out your hand, and place it in my side. Do not disbelieve, but believe.” Thomas answered him, “My Lord and my God!” Jesus said to him, “Have you believed because you have seen me? Blessed are those who have not seen and yet have believed.” - John 20:24-29

Why all this suffering? - But he was pierced for our transgressions, he was crushed for our iniquities; the punishment that brought us peace was on him, and by his wounds we are healed - Isaiah 53:5