He believes in his own power.

He believes in his knowledge power.

He has an astonishing amount of physical strength.

He believes in his own strength.

You always become my strength, thank you very much.

The process of name resolution is very important in computer networks.

That unsolved problem keeps him awake at night.

That unsolved case keeps him awake at night.

She is planning a date with her current boyfriend.

He lost everything.