ἴσθι
be thou
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be thou
ἴσθι(ísthi)
Strong’s Definition
be thou
second person imperative present of G1510 (εἰμί);
“And when they were departed, behold, the angel of the Lord appeareth to Joseph in a dream, saying, Arise, and take the young child and his mother, and flee into Egypt, and be thou there until I bring thee word: for Herod will seek the young child to destroy him.”
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The Breath That Precedes Every Command
Five times the Holy Spirit breathes this word through the apostolic writings—ísthi, the sharp edge of a divine imperative shaped in present tense. This is not a command for a single moment but a summons to an abiding state, a posture of the soul that must be entered and inhabited. The Greek ear would have caught the weight of this present imperative: not "become" but "be," not "try" but "continue being." When the Master speaks this word, He commands existence itself to align with His will. The first time this verb appears in the New Testament, it carries the full weight of heaven's authority, calling a man to stand in a truth that will cost him everything.
The Grammar of Standing Still
The present imperative in Greek carries a peculiar urgency—it demands not a single act but an ongoing condition. When the Lord says ísthi, He is not asking for a decision but for a dwelling. The ancient rabbis taught that the righteous person is like a tree planted by water, and this verb captures that rootedness. The tense insists: do not merely agree with truth in this hour, but let truth agree with you in every hour. The Strong's definition gives us "be thou," yet the KJV translators saw something deeper when they rendered it also as "give thyself wholly to." For to be commanded to "be" is to be commanded to give oneself entirely—there is no partial existence in the kingdom of heaven. The apostle Paul understood this when he wrote of being "found in Him," not having a righteousness of his own, for the verb of being must have its object in the Messiah.
The First Command of the Healing
In the Gospel accounts, Yeshua speaks this word at a moment of profound confrontation. When He heals the man with the withered hand on the Sabbath, He first commands him to "stand forth"—but the Greek records a different construction. The power of this verb emerges most clearly in the apostolic exhortations. The writer of Hebrews, drawing from the Septuagint translation of the Hebrew Scriptures, uses this same root to call believers to "hold fast" their confidence. The LXX translators had chosen this Greek word to render the Hebrew hayah—the verb of being that God spoke to Moses from the burning bush. When Israel heard "I AM" from the flames, they heard the eternal present, the One who does not become but simply is. Now this same verb, in its imperative form, is given to mortals. The command to "be" is a participation in the divine nature itself.
The Apostolic Pattern of Exhortation
The apostle Paul employs this word with surgical precision in his letters. When he writes to Timothy, he charges him to "be" an example to the believers—not to become one eventually, but to inhabit that reality now. The early church understood this as a call to ontological transformation: the believer does not merely act like a child of light but is light in the Lord. The fathers of the apostolic tradition taught that this verb carries the mystery of the new creation, where old things have passed away and all things have become new. To be commanded to "be" is to be reminded of what grace has already made you. The Roman believers heard this call when Paul urged them to "be" transformed by the renewing of their minds, linking the imperative of being to the ongoing work of the Spirit.
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The LXX Bridge: From Hebrew Being to Greek Command
When the Septuagint translators encountered the Hebrew hayah in the sacred text, they chose eimi and its derivatives to carry the weight of divine self-existence. Yet the imperative form ísthi appears most powerfully in the Psalms, where the psalmist cries out "Be still, and know that I am God." The Hebrew behind that command is raphah, meaning to sink down, to let go, to become weak—yet the LXX renders it with this verb of being. The rabbis of old observed that the command to be still is actually a command to be fully present, to inhabit the moment of encounter with the Holy One. When the Greek word meets the Hebrew concept, a profound truth emerges: the highest form of action is the surrender of self into the being of God. The apostolic writers seized this paradox and applied it to the life of faith, where striving ceases and abiding begins.
The Messianic Fulfillment: The One Who Is
The New Testament writers apply this verb to the Messiah in ways that echo the burning bush. When Yeshua declares "I am the resurrection and the life," He uses the same root from which ísthi derives. He does not say "I have become" but "I am"—the eternal present of divine being. In the Revelation, the glorified Christ proclaims Himself the Alpha and Omega, the One who is and who was and who is to come. The command ísthi finds its ultimate ground in the person of the Messiah, for He alone can say "be" with the authority of the One who simply is. When He speaks this word to His disciples, He invites them into His own eternal life, where they are not merely called righteous but made righteous, not merely forgiven but made new. The early church confessed that in Christ, the command to "be" becomes a promise—for what He commands, He also provides.
The Call to Inhabit Your Name
You have been called by name, and that name is written in heaven. The command ísthi comes to you today not as a burden but as an invitation to stop striving and start being. The ancient sages taught that every person has a unique way of serving the Holy One, a particular "being" that no other soul can inhabit. When the Master says "be," He is not asking you to become someone else—He is calling you fully into the person He created you to be. The withered hand was restored not by effort but by obedience to the command to stretch it out. So too, your wholeness comes not from doing but from being, not from becoming but from yielding to the One who says "I AM." Let this word settle into the marrow of your bones: you are not commanded to earn, to prove, or to achieve. You are commanded simply to be—in Him, through Him, and for Him. And in that being, you will find the rest that the Sabbath always promised.