'Once' in the Bible

Please forgive my sin once more and make an appeal to Yahweh your God, so that He will take this death away from me.”

“Once a year Aaron is to perform the purification rite on the horns of the altar. Throughout your generations he is to perform the purification rite for it once a year, with the blood of the sin offering for atonement. The altar is especially holy to the Lord.”

The Lord spoke to Moses: “Go down at once! For your people you brought up from the land of Egypt have acted corruptly.