あなたに言っておきます。

you (referring to someone of equal or lower status); dear (what a wife calls a husband)

at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although

to say; to utter; to declare; to name; to call; to go (e.g. "the alarm went ping"); to make a noise