Charles H. Spurgeon on Psalms 60:7

Judah is (or shall be) my lawgiver, i.e., all his subjects should be brought under one Head, one governor, who should give them laws, according to which they should be ordered or governed, which power and authority belonged to the tribe of Judah, according to that prophecy of Jacob (Ge 49:10), to which the psalmist here alludes. No way, no means to bring the people unto unity, to bring them into one body, but by bringing them under on head, one law giver, by whose laws they may be regulated and governed. Now in the church, and in matters of religion, this one Head is Christ, even that Lion of the tribe of Judah, as he is called (Re 5:5). He is the Law giver of his church, and let him so be. This will be found one, aye, and the only means to breed an holy and religious unity, and bring home straying, wandering sheep. John Brinsley.