Reference for Psalms 18:5

אֲפָפ֥וּנִי חֶבְלֵי־מָ֑וֶת וְֽנַחֲלֵ֖י בְלִיַּ֣עַל יְבַֽעֲתֽוּנִי׃

The cords of Death compassed me, and the floods of Belial assailed me.

ספר השרשים