'Separated' in the Bible

“Before I formed you in the womb I knew you [and approved of you as My chosen instrument],And before you were born I consecrated you [to Myself as My own];I have appointed you as a prophet to the nations.”

The men who have violated My covenant, who have not kept the terms of the solemn pledge which they made before Me when they split the [sacrificial] calf in half, and then afterwards walked between its separated pieces [sealing their pledge to Me by placing a curse on themselves should they violate the covenant—those men I will make like the calf]!