John Gill Commentary Psalms 78:43

"How he set his signs in Egypt, And his wonders in the field of Zoan," — Psalms 78:43 (ASV)

How he had wrought his signs in Egypt
The plagues which he brought upon the Egyptians, for refusing to let Israel go:

and his wonders in the field of Zoan,
or in the country of Zoan, that is, Tanis, as the Targum renders it; so the Septuagint and Vulgate Latin versions; see (Psalms 78:12) , an enumeration of these signs and wonders follows; but not of all, nor in the order in which they were: only seven are mentioned, with which compare the seven vials or last plagues, (Revelation 6:1) .