Isaiah 19:23

19:23 At that time there will be a highway from Egypt to Assyria. The Assyrians will visit Egypt, and the Egyptians will visit Assyria. The Egyptians and Assyrians will worship together.

Isaiah 29:13

29:13 The sovereign master says,

“These people say they are loyal to me;

they say wonderful things about me,

but they are not really loyal to me.

Their worship consists of

nothing but man-made ritual.

Isaiah 36:7

36:7 Perhaps you will tell me, ‘We are trusting in the Lord our God.’ But Hezekiah is the one who eliminated his high places and altars and then told the people of Judah and Jerusalem, ‘You must worship at this altar.’

Isaiah 46:6

46:6 Those who empty out gold from a purse

and weigh out silver on the scale

hire a metalsmith, who makes it into a god.

They then bow down and worship it.