“And when thou preparest a bullocke for a burnt offering, or for a sacrifice in performing a vow, or peace offerings vnto the Lord:”
1611 King James Version (KJV)
15:8 Peace - offerings - Such as were offered either freely or by command, which may be called peace - offerings or thank - offerings, by way of eminency, because such are offered purely by way of gratitude to God, and with single respect to his honour, whereas the peace - offerings made in performance of a vow were made and offered, with design of getting some advantage by them.