For I was born a sinner—
    yes, from the moment my mother conceived me.
⁶ But you desire honesty from the womb,
    teaching me wisdom even there. Psalm 51: 5,6 

Explain honesty. Are there loopholes?

For I was born a sinner—
    yes, from the moment my mother conceived me.
⁶ But you desire honesty from the womb,^[b]
    teaching me wisdom even there. Psalm 51: 5,6

Is man basically good or basically evil? What makes you think this way?

For I recognize my rebellion;
    it haunts me day and night.
⁴ Against you, and you alone, have I sinned;
    I have done what is evil in your sight.
You will be proved right in what you say,
    and your judgment against me is just.

Psalm 51: 3,4

Why would David say “Against you and you alone have I sinned?”

Is our sin only against God?

For I recognize my rebellion;
    it haunts me day and night.
⁴ Against you, and you alone, have I sinned;
    I have done what is evil in your sight.
You will be proved right in what you say,
    and your judgment against me is just.

Psalm 51: 3,4

When did you first recognize that you were in rebellion against God?

Have mercy on me, O God,
    because of your unfailing love.
Because of your great compassion,
    blot out the stain of my sins.
² Wash me clean from my guilt.
    Purify me from my sin. Psalm 51:1,2

How does God cleanse us from guilt?