'Solemnly' in the Bible

Judah spoke to him, however, saying, “The man solemnly warned us, ‘You shall not see my face unless your brother is with you.’

Moses took the bones of Joseph with him, for he had made the sons of Israel solemnly swear, saying, “God will surely take care of you, and you shall carry my bones from here with you.”

Now then, listen to their voice; however, you shall solemnly warn them and tell them of the procedure of the king who will reign over them.”

So the king sent and called for Shimei and said to him, “Did I not make you swear by the Lord and solemnly warn you, saying, ‘You will know for certain that on the day you depart and go anywhere, you shall surely die’? And you said to me, ‘The word which I have heard is good.’

For I solemnly warned your fathers in the day that I brought them up from the land of Egypt, even to this day, warning persistently, saying, “Listen to My voice.”