'Adjured' in the Bible

But the men of Israel were distressed that day. Now Saul had adjured the people, saying, Cursed be the man that eateth food until evening, and until I am avenged on mine enemies. So none of the people tasted food.

But Jonathan had not heard when his father adjured the people; and he put forth the end of his staff which was in his hand, and dipped it in the honeycomb, and put his hand to his mouth, and his eyes became bright.

Then answered one of the people and said, Thy father strictly adjured the people, saying, Cursed be the man that eateth food this day; and the people are faint.

And I contended with them, and cursed them, and smote certain of them and plucked off their hair, and adjured them by God saying, Ye shall not give your daughters to their sons, nor take their daughters for your sons or for yourselves.