To the end that the children of Israel may bring their sacrifices. This passage tells us the purpose of the previous command: it is to prevent sacrifices being sacrificed (the word is twice used in the original) in the open field, or anywhere else than in the court of the tabernacle.
It follows that the command refers to sacrifice, not to mere slaughtering. Clark, taking the opposite view of the command, is obliged to change the translation, sacrifices which they offer in the open field, into "beasts for slaughter which they now slaughter in the open field" ('Speaker's Commentary'); but he has no authority for doing so.
Zabach means always, in the Pentateuch, to slay in sacrifice. These field sacrifices, when offered to the Lord in the proper place and with the proper ceremonies, would become peace offerings unto the Lord.