'Solemnly' in the Bible

Then he began to curse violently. "I don't know the man!" he swore solemnly. Just then a rooster crowed.

After saying this, Jesus was deeply troubled in spirit and declared solemnly, "Truly, I tell all of you emphatically, one of you is going to betray me!"

He also ordered us to preach to the people and to testify solemnly that this is the one appointed by God to be the judge of the living and the dead.

With God as my witness, as well as the Messiah Jesus and the chosen angels, I solemnly call on you to carry out these instructions without prejudice, doing nothing on the basis of partiality.

Since you are in the presence of God, who gives life to everything, and in the presence of the Messiah Jesus, who gave a good testimony before Pontius Pilate, I solemnly charge you

In the presence of God and the Messiah Jesus, who is going to judge those who are living and those who are dead, and in view of his appearing and his kingdom, I solemnly appeal to you