was ich Ihnen sage

what I tell you

→ was
phrase Uncommon #23,229
what I tell you Ihnen is the formal way to say “you” as an indirect object. The verb form can change with tense or context.
GE: Hören Sie genau zu, was ich Ihnen sage.
EN: Listen carefully to what I tell you.

Was ich Ihnen sage, stimmt.

What I’m telling you is true.

Begreifen Sie, was ich Ihnen sage?

Do you understand what I’m telling you?

— Kein Sterbenswort (2006)

Warum tun Sie nie, was ich Ihnen sage?

Why don't you ever do what I tell you?

Wissen Sie, was ich Ihnen sage?

Do you know what I'm telling you?

— Ali: Fear Eats the Soul (1974)