expression
from ... to ...; through; over (a period); about (time/place)
Used with a starting point (often から) to indicate a range of time or space, or an approximate point. Common in phrases like ~から~にかけて.
明日の朝から昼にかけて雨が降るでしょう。
It will rain from tomorrow morning through the afternoon.
関東から東北にかけて大きな地震があった。
There was a major earthquake from the Kanto region up to the Tohoku region.
expression
concerning (an area of expertise); when it comes to
Used to indicate a field or domain in which someone excels or has deep knowledge. Often follows a noun like 知識, 技術, or a person's name.
彼は歴史にかけては誰にも負けない。
When it comes to history, he is second to none.
expression
swearing by (one's sword, God, etc.)
Used in solemn oaths or vows, often with 誓う or 約束する. Appears in set phrases like 神にかけて誓う.
神にかけて真実を話すと誓います。
I swear by God to tell the truth.