of a
Meaning
of a
(dated, now dialectal, idiomatic) on every; in the (followed by a noun indicating a certain time)
Examples
Hope is the dream of a waking man.
Speak no ill of a friend, nor even of an enemy.
When the character of a man is not clear to you, look at his friends.
Beware of the anger of a patient man.
The punishment of a liar is that he is never believed, even when he speaks the truth.