Question: How can Psalm 40:6 and Leviticus exist at the same time?

Question: Psalm:40:6Sacrifice and offering thou didst not desire; mine ears hast thou opened: burnt offering and sin offering hast thou not required.
See All... reads, “Sacrifice and offering thou didst not desire; mine ears hast thou opened: burnt offering and sin offering hast thou not required.” Why did David say this verse when a good chunk of Leviticus made rules on sacrifice?

Response: First of all, because he was inspired by the Lord to write this down. Secondly, he’s referencing 1 Samuel:15:22And Samuel said, Hath the LORD as great delight in burnt offerings and sacrifices, as in obeying the voice of the LORD? Behold, to obey is better than sacrifice, and to hearken than the fat of rams.
See All..., where Samuel was inspired to say, “Hath the LORD as great delight in burnt offerings and sacrifices, as in obeying the voice of the LORD? Behold, to obey is better than sacrifice, and to hearken than the fat of rams.”

Further, he is speaking prophetically of the Lord Jesus. Verse 7 of Psalm 40 reads, “Then said I, Lo, I come: in the volume of the book it is written of me.”

Hebrews:10:5Wherefore when he cometh into the world, he saith, Sacrifice and offering thou wouldest not, but a body hast thou prepared me:
See All... explains further, “Wherefore when he cometh into the world, he saith, Sacrifice and offering thou wouldest not, but a body hast thou prepared me….”

Simply put, David wrote this verse because he was inspired by the Lord to do so and it speaks emphatically of the end of the Levitical sacrifices. In Hebrews:10:9Then said he, Lo, I come to do thy will, O God. He taketh away the first, that he may establish the second.
See All..., God inspired the writer to say, “Then said he, Lo, I come to do thy will, O God. He taketh away the first, that he may establish the second.”