Rashi on Deuteronomy 7:19/רש"י על דברים ז׳:י״ט

1המסות means, THE TRIALS (cf. Rashi on 4:34).

2והאתת AND THE SIGNS, for example (Exodus 4:3) “and it became a serpent”, and (Exodus 4:9) “It became blood on the dry land”. ...

3והמפתים AND THE WONDERS, viz., the wondrous plagues.

4והיה החזקה AND THE STRONG HAND — this refers to the pestilence (Sifrei Bamidbar 115:1; cf. the Passover Haggadah).

5והזרע הנטיה AND THE OUTSTRETCHED ARM, this refers to the sword for the smiting of the firstborn (Exodus 4:23).