Charles Ellicott Commentary Psalms 66:15

"I will offer unto thee burnt-offerings of fatlings, With the incense of rams; I will offer bullocks with goats. Selah" — Psalms 66:15 (ASV)

I will offer. —Such a whole burnt offering could hardly have been vowed by a single person. It is the community that speaks. Besides, the ram was not a sacrifice for any individual, but particularly enjoined for the high priest (Leviticus 9:2), the head of a tribe (Numbers 7), or a Nazarite (Numbers 6:14). Incense is here the ascending smoke of the sacrifice.