## Abraham complained to Abimelech concerning a well of water that Abimelech’s servants had seized from him. ##

This can be translated as "Abraham rebuked Abimelech because Abimelech's servants had taken one of Abraham's wells."

## seized from him ##

"taken from Abraham" or "had taken control of" (UDB)

## I have not heard of it until today ##

This can be translated as "and I did not hear about it until today" or "This is the first time I have heard about it."