Samuel said, How can I go? if Saul hear it, he will kill me. Yahweh said, Take a heifer with you, and say, I am come to sacrifice to Yahweh.
and the Lord said, take an heifer with thee, and say, I am come to sacrifice to the Lord; a peace offering, which might be done any where in those unsettled times, the ark being at one place, and the tabernacle at another; and might be offered upon a private altar, and by a private person; and as it seems Samuel used to sacrifice at different places; see 1 Samuel 7:9. Ben Gersom relates it as the sense of one of their Rabbins in his age, that there was a person slain in those parts, not known by whom he was slain; and so Samuel is ordered to take an heifer to fulfil the law in Deuteronomy 21:1 and therefore Saul would make no inquiry into his reason of going thither with an heifer, and this is commended both by him and Abarbinel.