Contradiction with Numbers 23:19
God does not change His mind, while Exodus 30:29 emphasizes the eternal holiness of anointing.
Numbers 23:19: God [is] not a man, that he should lie; neither the son of man, that he should repent: hath he said, and shall he not do [it]? or hath he spoken, and shall he not make it good?
Contradiction with Hebrews 6:18
It is impossible for God to lie, whereas Exodus 30:29 sets a law that appears changeless.
Hebrews 6:18: That by two immutable things, in which [it was] impossible for God to lie, we might have a strong consolation, who have fled for refuge to lay hold upon the hope set before us:
Paradox #1
Exodus 30:29 mentions consecrating certain items to make them holy and reserved for sacred use. A potential contradiction could be the exclusive distinction between holy and common, implying that some things or people are intrinsically more special than others, which might conflict with the idea of equality or the belief that everyone and everything is equally valuable.