Genesis 31:45 Meaning

43And Laban answered and said unto Jacob, These daughters are my daughters, and these children are my children, and these cattle are my cattle, and all that thou seest is mine: and what can I do this day unto these my daughters, or unto their children which they have born?

44Now therefore come thou, let us make a covenant, I and thou; and let it be for a witness between me and thee.

45And Jacob took a stone, and set it up for a pillar.

46And Jacob said unto his brethren, Gather stones; and they took stones, and made an heap: and they did eat there upon the heap.

47And Laban called it Jegarsahadutha: but Jacob called it Galeed.