Psalm 100:1b-2, 3, 4ab, 4c-5 and Exodous 17;8-13

Psalm 100:1b-2, 3, 4ab, 4c-5
R. (3b) The Lord made us, we belong to him.
Sing joyfully to the LORD all you lands;
serve the LORD with gladness;
come before him with joyful song.
R. The Lord made us, we belong to him.
Know that the LORD is God;
he made us, his we are;
his people, the flock he tends.
R. The Lord made us, we belong to him.
Enter his gates with thanksgiving,
his courts with praise.
R. The Lord made us, we belong to him.
Give thanks to him; bless his name, for he is good:
the LORD, whose kindness endures forever,
and his faithfulness, to all generations.
R. The Lord made us, we belong to him.

Exodous 17;8-13
​In those days, Amalek came and waged war against Israel.
Moses, therefore, said to Joshua,
“Pick out certain men,
and tomorrow go out and engage Amalek in battle. 
I will be standing on top of the hill
with the staff of God in my hand.” 
So Joshua did as Moses told him:
he engaged Amalek in battle
after Moses had climbed to the top of the hill with Aaron and Hur.
As long as Moses kept his hands raised up,
Israel had the better of the fight,
but when he let his hands rest,
Amalek had the better of the fight.
Moses’hands, however, grew tired;
so they put a rock in place for him to sit on. 
Meanwhile Aaron and Hur supported his hands,
one on one side and one on the other,
so that his hands remained steady till sunset.
And Joshua mowed down Amalek and his people
with the edge of the sword.