salvation = great salvation, plural of majesty. But some codices, with Septuagint and Syriac, read singular.
Zion. See App-68.
God. Some codices, with Aramaean, Septuagint, and Syriac, read "Jehovah".
Jacob . . . Israel: i.e. both natural and spiritual seed. See notes on Gen_32:28; Gen_43:6; Gen_45:26, Gen_45:28. To the chief Musician. This Psalm was edited for public use; hence the title Elohim. See notes above.
on = relating to.
Neginoth = smitings: referring to God's smitings with words and acts. See Psa_53:5, which differs from Psa_14:5-6. See App-65.