John Gill Commentary Ezekiel 28:26

"And they shall dwell securely therein; yea, they shall build houses, and plant vineyards, and shall dwell securely, when I have executed judgments upon all those that do them despite round about them; and they shall know that I am Jehovah their God." — Ezekiel 28:26 (ASV)

And they shall dwell safely therein
There being none to make them afraid, all their enemies being destroyed, and they also under the protection of Christian princes: and they shall build houses and plant vineyards; signifying their continuance in their land, and their enjoyment of the blessings of it.

Cocceius understands this of churches gathered in the name of Christ; of which no doubt there will be many in Judea, as in the first times of the Gospel, and more abundantly.

yea, they shall dwell with confidence: in the utmost safety and security, having nothing to fear from any quarter.

when I have executed judgment upon all those that despise them round
about them; took vengeance on them, and utterly destroyed them that despised or spoiled them, even all around them; they will all be cut off, so that there will be none to give them the least disturbance.

and they shall know that I am the Lord their God: not only God, as before, (Ezekiel 28:24) , but their God, their Lord and their God, their Redeemer and Saviour, whom they formerly denied, persecuted, and pierced.