Psalms 95:8-9

8 He says,
The words “he says” are supplied in the translation to clarify that the following words are spoken by the Lord (see vv. 9–11).
“Do not be stubborn like they were at Meribah,
The name Meribah means “strife.” Two separate but similar incidents at Meribah are recorded in the Pentateuch (Exod 17:1–7; Num 20:1–13, see also Pss 81:7; 106:32). In both cases the Israelites complained about lack of water and the Lord miraculously provided for them.

like they were that day at Massah
The name Massah means “testing.” This was another name (along with Meribah) given to the place where Israel complained following the Red Sea Crossing (see Exod 17:1–7, as well as Deut 6:16; 9:22; 33:8).
in the wilderness,
Heb “do not harden your heart[s] as [at] Meribah, as [in] the day of Massah in the wilderness.”

9 where your ancestors challenged my authority,
Heb “where your fathers tested me.”

and tried my patience, even though they had seen my work.
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