Revelation 21:17

17 and he measured its wall, an hundred forty-four cubits, the measure of a man, that is, of the messenger;

Revelation 21:17 Meaning and Commentary

Revelation 21:17

And he measured the wall thereof, an hundred and forty and
four cubits
The root of which is twelve, for twelve times twelve is a hundred and forty four; which number is mystical and apostolical, and suited to the perfect state of this church: hence twelve gates, and twelve angels at them, and the names of the twelve tribes on them, and twelve foundations of the wall, and twelve thousand furlongs, the measure of the city.

According to the measure of a man, that is, of the angel;
who talked with John, and measured the city, gates, and wall, and who appeared in the form of a man; and his reed might be, as some have supposed, the length of a man, six cubits, or six feet, as in ( Ezekiel 40:5 ) and may denote that this business requires the utmost wisdom and understanding of a man, and even of an angel, to look into, and find out; see ( Revelation 13:18 ) and also may signify the angelic state of the saints at this time, when the children of the resurrection will be like the angels of God, for immortality and glory.

Revelation 21:17 In-Context

15 And he who is speaking with me had a golden reed, that he may measure the city, and its gates, and its wall;
16 and the city lieth square, and the length of it is as great as the breadth; and he did measure the city with the reed -- furlongs twelve thousand; the length, and the breadth, and the height, of it are equal;
17 and he measured its wall, an hundred forty-four cubits, the measure of a man, that is, of the messenger;
18 and the building of its wall was jasper, and the city [is] pure gold -- like to pure glass;
19 and the foundations of the wall of the city with every precious stone have been adorned; the first foundation jasper; the second, sapphire; the third, chalcedony; the fourth, emerald;
Young's Literal Translation is in the public domain.