Then there shall be a place which the Lord your God shall choose to cause his name to dwell there; thither shall ye bring all that I command you; your burnt offerings, and your sacrifices, your tithes, and the heave offering of your hand, and all your choice vows which ye vow unto the Lord: (Deuteronomy 12:11)
The Lord commanded sacrifices and offerings to be brought to Him, not because of any inherent virtue in the gifts themselves, but as object lessons by which the people might learn the way of salvation. Without sincerity of heart on the part of the believer, his offering was not acceptable to God (1 Sam. 15:22; Isa. 1:11; Jer. 7:22-24).
All your choice vows.
Literally, “all thechoice of your vows”—all their offerings in payment of vows. The sacrificial animals they selected were to be physically perfect, with no defect whatever.