THE GOD. Hebrew El (with Art.) App-4.
of our. "[Who is] our".
salvation. Some codices, with one early printed edition, Septuagint, and Vulgate, read "salvations" (plural). our great salvation.
Selah. Connecting the exhortation to bless Jehovah (Psalms 68:19) with the reason for it (Psalms 68:20). See App-66.