2199. That 'well advanced in years' means that the time was at hand follows from what has now been stated. 'A day' in the Word, as also 'a year', and indeed 'time' in general, means state, as shown in 23, 487, 488, 493, 893. Thus: here 'advanced in years' means, in the internal sense, entering that state in which He was to cast off the human, and so means that the time was at hand.
Ezekiel 1:27-28
27
I saw as it were glowing metal, as the appearance of fire within it all around, from the appearance of his waist and upward; and from the appearance of his waist and downward I saw as it were the appearance of fire, and there was brightness around him.
28
As the appearance of the rainbow that is in the cloud in the day of rain, so was the appearance of the brightness all around. This was the appearance of the likeness of the glory of Yahweh. When I saw it, I fell on my face, and I heard a voice of one that spoke.