Psalm 49:9 New English Translation

⁹so that he might continue to live^[a] forever
and not experience death.^[b]

Psalm 49:9 tn The jussive verbal form with vav (ו) conjunctive is taken as indicating purpose/result in relation to the statement made in v. 7. (On this use of the jussive after an imperfect, see GKC 322 §109.f.) In this case v. 8 is understood as a parenthetical comment.
Psalm 49:9 tn Heb “see the Pit.” The Hebrew term שַׁחַת (shakhat, “pit”) is often used as a title for Sheol (see Pss 16:10; 30:9; 55:24 HT [55:23 ET]; 103:4).

New English Translation (NET)