Parashas Vayikra · Aliyah 1 · Passuk 7
Chabad.org — English translation + Rashi
Torah Temima points to Yoma 26b / related sources on the arrangement of wood and fire by the kohanim (verified pattern for this passuk).
English: The sons of Aharon the kohen shall place fire on the altar and arrange wood on the fire.
Custom (assignment of service) — the verse names the kohanim as the ones who place the fire and arrange the wood, distinguishing this stage of the olah service.
Placing fire on the altar and arranging the wood are acts of the avodah performed by the kohanim. The order is fire first, then wood upon the fire.