Obviously they clicked the tongs.

We were made in God’s image, and we can’t explain rationally clicking tongs. Therefore, clicking tongs is divine, and so they would have clicked them.

Then one of the seraphim flew to me with a live coal in his hand, which he had taken with tongs from the altar. With it he touched my mouth and said, “See, this has touched your lips; your guilt is taken away and your sin atoned for.”