'Didst' in the Bible

"LORD, when thou didst go forth from Se'ir, when thou didst march from the region of Edom, the earth trembled, and the heavens dropped, yea, the clouds dropped water.

Then Mano'ah entreated the LORD, and said, "O, LORD, I pray thee, let the man of God whom thou didst send come again to us, and teach us what we are to do with the boy that will be born."