How sure was John the Baptist of Jesus’s divinity?

Luke 1:41,44

And when Elizabeth heard the greeting of Mary, the baby leaped in her womb. And Elizabeth was filled with the Holy Spirit,

For behold, when the sound of your greeting came to my ears, the baby in my womb leaped for joy.

John 1: 29,36

The next day he saw Jesus coming toward him, and said, “Behold, the Lamb of God, whotakes away the sin of the world!

The next day he saw Jesus coming toward him, and said, “Behold, the Lamb of God, whotakes away the sin of the world!

Luke 7:18-20

The disciples of John reported all these things to him. And John, calling two of his disciples to him, sent them to the Lord, saying, “Are you the one who is to come, or shall we look for another?” And when the men had come to him, they said, “John the Baptist has sent us to you, saying, “Are you the one who is to come, or shall we look for another?”