Charles H. Spurgeon on Psalms 84:6

Baca, signifieth a mulberry tree, which loves to grow in dry places that be sandy and barren, 2Sa 5:23-24, or 1Ch 14:14-15. Now they whose hearts be set upon God's house and holy worship, when they go thitherward through a sandy, dry, barren valley, do make it a well, —that is, repute and count it as a well, the word rhrtysy signifieth to put or set, as Ge 3:15; Ps 21:6,12 83:11,13. For thus will they say with themselves, thinking upon the comfort of God's favour to whom they go, that it shall be to them as the rain of blessings, a plentiful and liberal rain upon the ground. Thomas Pierson.