'Solemnly' in the Bible

And in the name of Him who lives until the Ages of the Ages, the Creator of Heaven and all that is in it, of the earth and all that is in it, and of the sea and all that is in it, he solemnly declared,

"I Jesus have sent My angel for him solemnly to declare these things to you among the Churches. I am the Root and the offspring of David, the bright Morning Star.

I testify and warn everyone who hears the words of the prophecy of this book [its predictions, consolations, and admonitions]: if anyone adds [anything] to them, God will add to him the plagues (afflictions, calamities) which are written in this book;

"He who solemnly declares all this says, "'Yes, I am coming quickly.'" Amen. Come, Lord Jesus.