'Solemnly' in the Bible

Then Judah said to him, "The man solemnly admonished us, saying, 'You shall not see my face unless your brother [is] with you.'

And Moses took the bones of Joseph with him because [Joseph] had made the {Israelites} solemnly swear an oath, saying, "God will surely attend to you, and you will take up my bones from here with you."

Therefore,' {declares} Yahweh the God of Israel, 'though I solemnly said that your house and the house of your ancestor would walk before me forever, but now,' {declares} Yahweh, 'far be it from me, for those who honor me I will honor, but those who despise me, I will treat with contempt!

for I solemnly admonished your ancestors in the day of my leading them out from the land of Egypt and up to this day, {admonishing persistently}, {saying}, "Obey my voice."