David
Psalm 84:12ESV·traditional attribution

O LORD of hosts, blessed is the one who trusts in you!

John Calvin Reformed @genevareformer

PSALM 84 The Psalmist complains that nothing proved to him a source of greater distress than his being prevented from coming to the tabernacle, and his being banished from the assembly of the saints, where God was called upon. And yet he shows, that nothing can withstand the longing desires of the godly; and that, surmounting all obstacles, they will be constantly engaged in seeking...

Commenting on Psalm 84:1-12

C.H. Spurgeon Reformed Baptist @princeofpreachers

O Lord of hosts, blessed is the man that trusteth in thee. Here is the key of the Psalm. The worship is that of faith, and the blessedness is peculiar to believers. No formal worshipper can enter into this secret. A man must know the Lord by the life of real faith, or he can have no true rejoicing in the Lord's worship, his house, his Son, or his ways.

Matthew Henry Presbyterian @wholebiblehenry

Here, I. The psalmist prays for audience and acceptance with God, not mentioning particularly what he desired God would do for him. He needed to say no more when he had professed such an affectionate esteem for the ordinances of God, which now he was restrained and banished from.

Commenting on Psalm 84:8-12