John Gill Commentary 2 Chronicles 28:16

"At that time did king Ahaz send unto the kings of Assyria to help him." — 2 Chronicles 28:16 (ASV)

At that time did King Ahaz send to the kings of Assyria to
help him .
To Tiglathpileser, and his son, see (2 Kings 16:7) , and the Septuagint, Vulgate Latin, Syriac, and Arabic versions, read in the singular, and so the Targum.