As for you, the one who lives in the shelter of the sovereign One, and resides in the protective shadow of the mighty king
[Ps 91:1 NET]
What is “the secret place of the most High?” It is the same spot, of which Asaph speaks in the seventy-third Psalm—“Until I went into the sanctuary of God, then understood I their end.” It is the spot, of which the Lord speaks in Ezekiel—“I will be to them as a little sanctuary in the countries where they shall come.” Then this “secret place” is the secret bosom of God. It is an entrance by faith into Jehovah, by a spiritual manifestation of him, leading us into a spiritual acquaintance with him. “The secret place of the most High” is that solemn spot, where Jehovah meets with the sinner in Christ, and where he opens up to him the riches of his mercy, and leads him into his bosom, so as to read the secrets of his loving heart.
It is called a “secret” place, as only known to the those to whom it is especially communicated. It is called a “secret” place, because none can get into it—no, nor desire to get into it—except the Lord himself, with his own mysterious hand, opens up to them a part in it, sets them down in it, and sweetly blesses them in it. Then to be in “the secret place of the most High” is to be brought into something like fellowship and acquaintance with God—something like communion, spiritual worship, divine communion; so as to know something of him experimentally, and “run into” him, as “a strong tower,” and there feel solemn safety.