Isaiah 64: we are sinners and even our righteous deeds are repugnant.

 Let us imagine that the God of Israel was created by men. Certainly, this false god would praise Israel and its leaders. However, the Lord is Holy and wants his people to be holy. He insists so much on it that the temple in Jerusalem was destroyed as in Isaiah 64:

8 But now, Lord, You are our Father;
We are the clay, and You our potter,
And all of us are the work of Your hand.
9 Do not be angry beyond measure, Lord,
Nor remember wrongdoing forever.
Behold, please look, all of us are Your people.
10 Your holy cities have become a wilderness,
Zion has become a wilderness,
Jerusalem a desolation.
11 Our holy and beautiful house,
Where our fathers praised You,
Has been burned by fire;
And all our precious things have become a ruin.

Before, the prophet acknowledges the sin of the people of the Lord:

5 (..) Behold, You were angry, for we sinned,
We continued in [c]our sins for a long time;
Yet shall we be saved?
6 For all of us have become like one who is unclean,
And all our righteous deeds are like a filthy garment;
And all of us wither like a leaf,
And our wrongdoings, like the wind, take us away.
7 There is no one who calls on Your name,
Who stirs himself to take hold of You;
For You have hidden Your face from us
And have [d]surrendered us to the power of our wrongdoings.

The temple was destroyed by the Babylonians. Will the Lord rescue his people? Certainly He is powerful to do it:

1 Oh, that You would tear open the heavens and come down,
That the mountains would quake at Your presence—
2 [b]As fire kindles brushwood, as fire causes water to boil—
To make Your name known to Your adversaries,
That the nations may tremble at Your presence!
3 When You did awesome things which we did not expect,
You came down, the mountains quaked at Your presence.
4 For from days of old they have not heard or perceived by ear,
Nor has the eye seen a God besides You,
Who acts in behalf of one who waits for Him.

The Lord wants to meet us when we rejoice in doing righteousness:

5 You meet him who rejoices in doing righteousness,
Who remembers You in Your ways.

Let we have a new heart from the Lord!