These words are repeated three times (and in three different ways) by every pious Jew, morning and evening.

In the note on Gen. 49:18 it is pointed out that by the Fig. Metonymy (of Effect), see Ap. 6, "salvation" is put for Him Who brings it.  The meaning is beautifully put, thus, in the Jerusalem Targum:--

"Not to they salvation wrought by Gideon, the son of Joash, does my soul look, for it is temporal.  Not to they salvation wrought by Samson, the son of Manoah, is my longing directed, for it is transient:  but to the salvation, the completion of which Thou hast promised, by Thy everlasting Word, to bring to Thy people the descendants of Israel.

To Thy salvation, O Jehovah, to the salvation of Messiah the son of David, Who will one day redeem Israel and bring her back from the dispersion, to that salvation my soul looks forward; for Thy salvation is an everlasting salvation."