'Understood' in the Bible

Now [when they] saw the boldness of Peter and John, and understood that they were uneducated and untrained men, they were astonished, and recognized them, that they had been with Jesus.

But Felix, [because he] understood the [facts] concerning the Way more accurately, put them off, saying, "When Lysias the military tribune comes down, I will decide {your case}."

But I understood [that] he had done nothing deserving death himself, and [when] this man appealed to His Majesty the Emperor, I decided to send [him].