Isaiah 33:16

He shall dwell on high,.... And so in safety: this is opposed to the fears of hypocrites, the grovelling life of a worldling, and the low life of many professors, and is expressive of the security of good men. It may respect the state of the saints on earth, who dwell by faith on God, as their covenant God, on his everlasting love and unchangeable grace; on Christ, as their Redeemer and Saviour; and in their thoughts and contemplations on heavenly things, where Christ is; and particularly in the spiritual reign of Christ, after the destruction of antichrist, when such shall dwell quietly and safely in God's holy hill, the church, which shall be established upon the top of the mountains: and it may also respect the state of the saints in heaven, which is a dwelling on high, and where they will be safe from everlasting burnings, and out of the reach of all enemies:

his place of defence [shall be] the munitions of rocks; Christ is "the place of defence" to his people, against avenging justice, the curse and condemnation of the law, the wrath of God, sin and all its dreadful consequences, Satan and all enemies: and he is "the munitions of rocks"; he is "a Rock" himself, for them to build upon, and shelter in; and like "fortresses" made out of "rocks", which can never be undermined, blown up, or broke through:

bread shall be given him: not only shall he be in safety, but shall enjoy the greatest plenty of blessings, particularly spiritual ones; above all, Christ, the bread of God from heaven, the true bread, the bread of life, which gives and supports life, and secures an eternal one; as also the word and ordinances, which are the provisions of Zion, and which all its inhabitants are favoured with; for these are all the "gifts" of divine goodness. The Targum is,

"in the house of the sanctuary his soul shall be satisfied, his food shall be sufficient:''

his waters [shall be] sure; Christ and his fulness, the Spirit and his grace, the Gospel doctrines, and ordinances of it; the believer may be assured of a supply from Christ's fulness; the grace of the Spirit is never failing, and is persevering; and Gospel doctrines and ordinances are not deceitful brooks, but yield comfort and refreshment: compare with this, Revelation 7:15.