Albert Barnes' Notes on the Whole Bible - Psalms 50:14
Offer unto God thanksgiving - The word rendered “offer” in this place - זבח zâbach - means properly “sacrifice.” So it is rendered by the Septuagint, θῦσον thuson - and by the Vulgate, “immola.” The word is used, doubtless, with design - to show what was the “kind” of sacrifice with which God would be pleased, and which he would approve. It was not the mere “sacrifice” of animals, as they commonly understood the term; it was not the mere presentation of the bodies and the blood of slain... read more
The Pulpit Commentary - Psalms 50:14
Offer unto God thanksgiving . The one offering acceptable to God is praise and thanksgiving out of a pure heart. This was designed to be the accompaniment of all sacrifice, and was the ground of acceptability in every case where sacrifice was acceptable. And pay thy vows unto the Most High ; i.e. "and so pay thy vows." So offer thy worship, and it will be accepted. read more