Right now I'm in Leviticus in my OT section of my Bible reading plan.
I noticed an implication of God allowing the poor to bring a lesser offering if they can't afford the prescribed offering:
But if he is poor and cannot afford so much, then he shall take one male lamb for a guilt offering to be waved, to make atonement for him, and a tenth of...
The implication I see is that the two male lambs was not the actual atonement for sin. If two lambs without blemish are required to atone for sin, shouldn't that be an absolute standard that can't be compromised?
This dilemma points to Christ. The animal sacrifices were a pointer by God that sin is gross and heinous, and atonement for it is bloody, expensive and gruesome.