Yes. That's what the Bible says.
God's Book speaks of people like you:
Ps 50:21
21 These things you have done and I kept silent;
you thought I was altogether like you.
But I will rebuke you
and accuse you to your face.
NIV
Ps 44:20-21
20 If we had forgotten the name of our God
or spread out our hands to a foreign god,
21 would not God have discovered it,
since he knows the secrets of the heart?
NIV
Ps 90:8
8 You have set our iniquities before you,
our secret sins in the light of your presence.
NIV
Ps 139:1-6
For the director of music. Of David. A psalm.
1 O LORD, you have searched me
and you know me.
2 You know when I sit and when I rise;
you perceive my thoughts from afar.
3 You discern my going out and my lying down;
you are familiar with all my ways.
4 Before a word is on my tongue
you know it completely, O LORD.
5 You hem me in — behind and before;
you have laid your hand upon me.
6 Such knowledge is too wonderful for me,
too lofty for me to attain.
Ps 147:5
5 Great is our Lord and mighty in power;
his understanding has no limit.
NIV
Job 21:22
22 "Can anyone teach knowledge to God,
since he judges even the highest?
NIV
Job 37:16
16 Do you know how the clouds hang poised,
those wonders of him who is perfect in knowledge?
NIV
Prov 21:30
30 There is no wisdom, no insight, no plan
that can succeed against the LORD.
NIV
John 2:24-25
24 But Jesus would not entrust himself to them, for he knew all men. 25 He did not need man's testimony about man, for he knew what was in a man.
NIV
1 John 3:20b
20 For God is greater than our hearts, and he knows everything.
NIV
Isa 40:14
14 Whom did the LORD consult to enlighten him,
and who taught him the right way?
Who was it that taught him knowledge
or showed him the path of understanding?
NIV
Jer 17:10
10 "I the LORD search the heart
and examine the mind,
to reward a man according to his conduct,
according to what his deeds deserve."
NIV
Isa 46:10
10 I make known the end from the beginning,
from ancient times, what is still to come.
I say: My purpose will stand,
and I will do all that I please.
NIV
One final note: If God does not know all things, then how can you be sure that he will judge you righteously? He might have missed many things about your life. Or forgotten. What if you think you're a born again Christian but with God's finite, imperfect knowledge of you, he could have a very different opinion of you? Not a very trustworthy God in my book.