If David writes in the 23rd Psalm the "I shall surely live in the house of the Lord forever" he is expressing his own personal confidence that God will treat him like that. It is not God telling us that He will treat David that way
We have already heard your argument that the God inspired David to record a lie in Scripture.
As a Catholic, you are compelled to make such wicked accusations against God and David. It is the Catholic way. It is Catholic second nature.
As always, when you Catholics pray that Psalm, just skip verse 6 because it does not apply to Catholics. We will take your word on that.