'Open Door' in the Bible

The gift of a person will open doors for him, and before the great, it gives him access.

If she be a wall, we shall build a silver bulwark thereupon: if she be an open door, we shall fasten her with boards of Cedar tree.

This is what the Lord says to His anointed, to Cyrus [king of Persia],Whose right hand I have heldTo subdue nations before him,And I will ungird the loins of kings [disarming them];To open doors before him so that gates will not be shut: