'Cannot' in the Bible

Then the Lord said to Gideon, “There are still too many people. Take them down to the water, and I will test them for you there. If I say to you, ‘This one can go with you,’ he can go. But if I say about anyone, ‘This one cannot go with you,’ he cannot go.”

When he saw her, he tore his clothes and said, “No! Not my daughter! You have devastated me! You have brought great misery on me. I have given my word to the Lord and cannot take it back.”