Psalm 73: 12 Such are the wicked; always at ease, they increase in riches. 13 All in vain I have kept my heart clean and washed my hands in innocence. 14 For all day long I have been plagued, and am punished every morning… 17 until I went into the sanctuary of God; then I perceived their end.
David is angry that the wicked appear to be prospering, yet the righteous are not, “All in vain I have kept my heart clean…”. But then there is verse 17, “until I went into the sanctuary of God; then I perceived their end.” In a place of worship the Lord helped David to see the situation differently. The prosperity of the wicked is temporary. While they appear to enjoy a glorious “now” they ultimately come to an inglorious end.
In the New Testament we might refer to this reframing of a situation from human perspective to God’s perspective as “repentance” which means to “turn around”. We “turn around” in the mind and in the spirit to see the world differently. Lord Jesus, help us to see the world as you see it. We pray in your holy name. Amen.
Fuel for the journey 
While I’m sure David may have been better than me in keeping ‘his heart clean’, he was a sinner just like me, and I surely do not doubt his faith. But he is judging someone else’s wickedness and not measuring his own.