Isaiah
Isaiah 9:15ESV·traditional attribution

the elder and honored man is the head, and the prophet who teaches lies is the tail;

John Calvin Reformed @genevareformer

15. The ancient and honorable, he is the head. What he had spoken allegorically about the head and the tail he explains more plainly and without a figure. He says that the heads are the princes and nobles who had the charge of public affairs, and sat at the helm of the commonwealth. To these he adds the false prophets, and says that they are meant by the tail.

Matthew Henry Presbyterian @wholebiblehenry

Here are terrible threatenings, which are directed primarily against Israel, the kingdom of the ten tribes, Ephraim and Samaria, the ruin of which is here foretold, with all the woeful confusions that were the prefaces to that ruin, all which came to pass within a few years after; but they look further, to all the enemies of the throne and kingdom of Christ the Son...

Commenting on Isaiah 9:8-21

John Gill Reformed Baptist @doctorgill

The ancient and honourable, he is the head,.... The elder in office, not in age; and who, on account of his office, dignity, and riches, is honoured by men, is of a venerable countenance himself, and is reverenced when seen and looked upon by others, and received by persons with pleasure and cheerfulness; as the phrase used signifies.