1.

O come, let us sing unto the LORD: let us make a joyful noise to the rock of our salvation.

The Psalm has two distinct parts, see Structure, above; not two independent Psalms strung together. The latter part is the complement of the former.
the LORD. Hebrew. Jehovah. App-4 .

2.

Let us come before his presence with thanksgiving, and make a joyful noise unto him with psalms.

presence. Hebrew = face. See note on Exodus 23:15 ; Exodus 34:20 . Hence the word "before" (Psalms 95:6 ; Psalms 96:6 , Psalms 96:9 , Psalms 96:13 ; Psalms 92:3 , Psalms 92:5 ; Psalms 98:6 , Psalms 98:9 ; Psalms 100:2 ; Psalms 102:2 , Psalms 102:10 , Psalms 102:28 , &c. This is the essence of all true worship.

3.

For the LORD is a great God, and a great King above all gods.

GOD. Hebrew EL App-4 .
gods = rulers, or judges. Hebrew. elohim. App-4 . See note on Exodus 22:9 .

4.

In his hand are the deep places of the earth: the strength of the hills is his also.

5.

The sea is his, and he made it: and his hands formed the dry land.

hands. Figure of speech Anthropopatheia. App-6 .

6.

O come, let us worship and bow down: let us kneel before the LORD our maker.

7.

For he is our God; and we are the people of his pasture, and the sheep of his hand. To day if ye will hear his voice,

God. Hebrew. Elohim. App-4 .
To day, &c. Compare Hebrews 3:7-11 ; Hebrews 4:1 .

8.

Harden not your heart, as in the provocation, and as in the day of temptation in the wilderness:

in the provocation = at Meribah (Numbers 20:13 ).
temptation = Massah (Exodus 17:7 ).

9.

When your fathers tempted me, proved me, and saw my work.

When. Hebrew ' asher = where.
tempted. Figure of speech Anthropopatheia. App-6 .
and = yea.

10.

Forty years long was I grieved with this generation, and said, It is a people that do err in their heart, and they have not known my ways:

this. Supply the Ellipsis by substituting "that".

11.

Unto whom I sware in my wrath that they should not enter into my rest.

Unto whom = Where: as in Psalms 95:9 (see note on "When", Psalms 95:9 ). Hebrew. 'asher.
rest. The rest, thus lost, is to be yet found in the future (according to Hebrews 3:7-11 , Hebrews 3:15 ; Hebrews 4:3 , Hebrews 4:7 ).