They shall go with their flocks and with their herds to seek the LORD; but they shall not find him; he hath withdrawn himself from them.
They shall go with their flocks and with their herds - to propitiate Yahweh (Isaiah 1:11-15).
To seek the Lord; but they shall not find him - because it is slavish fear leads them to seek Him; and because it then shall be too late (Proverbs 1:28; John 7:34).