His Works are true.
The psalmist has joined together God’s works of creation and the Holy Scriptures. They tell the same story and all the parts of the story fit together. True science and true understanding of the Scripture agree. This does not mean and scientists and theologians do not disagree, for both can and do err. There is a difference between science and scientists; theology and theologians.
God’s works are verity and judgment. There is order and there is rationality in Creation. Things fit together. If a man tells me there is a dog in my yard, and there is no dog in my yard, then he has lied to me. His words should correspond with the objective reality. It would also be a lie for him to say that a dog was in my yard, but it was really a horse, for one who speaks should be able to distinguish between a horse and a dog. Otherwise, he should keep still.
Creation and Scripture must never be placed at odds with each other. “The works of the Lord are great, sought out of all them that have pleasure therein.” (Ps. 111:2) Those who have no pleasure in God will have little pleasure in His works but will find many reasons to gripe and complain. When people do not like a person, they tend to find displeasure in his work. An unbelieving age finds many things to complain about, and denies that God’s works are verity and judgment. The real world does not admit contradiction. The scientist who goes against observation and reason will not long be successful. The fool bangs his head into the wall, and may pretend that it is not solid, but the bumps on his head deny his pretense.
“Behold my hands,” our Lord said. They were real hands, with real nail-prints in them. We are not called to believe some fable, some tale that did not fit what really happened, but to believe that the Word became flesh and dwelt among us, and died on the cross for the forgiveness of our sins. In Jesus Christ the promises of God entered our world of sense, and He was seen, and touched, and handled. (I John 1) Only a heart far from God would turn away from such great work.