'Midst' in the Bible

and in the midst of the lampstands I saw someone like the Son of Man, dressed in a robe reaching to His feet, and with a golden sash wrapped around His chest.

‘I know where you dwell, [a place] where Satan sits enthroned. Yet you are holding fast to My name, and you did not deny My faith even in the days of Antipas, My witness, My faithful one, who was killed (martyred) among you, where Satan dwells.

And I heard something like a voice in the midst of the four living creatures saying, “A quart of wheat for a denarius (a day’s wages), and three quarts of barley for a denarius; and do not damage the oil and the wine.”

for the Lamb who is in the center of the throne will be their Shepherd, and He will guide them to springs of the waters of life; and God will wipe every tear from their eyes [giving them eternal comfort].”