deceit

.Blessed is the one whose sin the Lord does not count against them and  in whose spirit is no deceit

Psalm 33 :2

Deceit means someone who does not cover up sin, does not pretend to be righteous. One who openly admits their sin to God. It's connected to v11 of the same Psalm “….. sing all you who upright in heart”

This doesn't mean you are sinless. It just means you are quick to repent and confess your sin. See, the reason Jesus was always confronting the religious leaders is that they were full of hypocrisy and didn’t even acknowledge their sin or even see their sin. This psalm is written by David, who was a man after God's own heart. He was far from perfect, but he knew it and so knew how to repent when confronted with His own sin. And shortcomings. He didn’t try to cover it up. He knew how to come to God and pour out His heart in humility and honesty. We see that in v5-v6 of this psalm

In the New Testament, Jesus says, " Blessed are the pure in heart, for they will see God which has a similar meaning. It must be possible; otherwise, Jesus wouldn’t have said it. A pure heart is not clouded by hypocrisy, deceit or stubbornness, so that person can see God clearly. Repenting quickly when they In other words, not living a double life. Living with a single focus, a single heart. Jesus said it’s a narrow gate that leads to life, and very few find it. There are millions of Christians who are not living with a single focus, undivided in the heart and in the things of the Kingdom.