Verse 21

If they have any kind of blemish– lameness, blindness, or anything else– you may not offer them as a sacrifice to the LORD your God.

Referenced Verses

• Deut 17:1 : 1 You must not sacrifice to him a bull or sheep that has a blemish or any other defect, because that is considered offensive to the LORD your God.
• Mal 1:7-8 : 7 You are offering improper sacrifices on my altar, yet you ask,‘How have we offended you?’ By treating the table of the LORD as if it is of no importance! 8 For when you offer blind animals as a sacrifice, is that not wrong? And when you offer the lame and sick, is that not wrong as well? Indeed, try offering them to your governor! Will he be pleased with you or show you favor?” asks the LORD of Heaven’s Armies.
• Lev 22:19-25 : 19 if it is to be acceptable for your benefit it must be a flawless male from the cattle, sheep, or goats. 20 You must not present anything that has a flaw, because it will not be acceptable for your benefit. 21 If a man presents a peace offering sacrifice to the LORD for a special votive offering or for a freewill offering from the herd or the flock, it must be flawless to be acceptable; it must have no flaw. 22 “‘You must not present to the LORD something blind, or with a broken bone, or mutilated, or with a running sore, or with a festering eruption, or with a feverish rash. You must not give any of these as a gift on the altar to the LORD. 23 As for an ox or a sheep with a limb too long or stunted, you may present it as a freewill offering, but it will not be acceptable for a votive offering. 24 You must not present to the LORD something with testicles that are bruised, crushed, torn, or cut off; you must not do this in your land. 25 Even from a foreigner you must not present the food of your God from such animals as these, for they are ruined and flawed; they will not be acceptable for your benefit.’”