What Does Acts 18:21 Mean?
But he bade them farewell and said, I must by all means keep the coming feast in Jerusalem, but I will turn back to you again, if God wills. And he sailed from Ephesus.
Key words are shown with the Hebrew or Greek and what each word meant.
Selah Decoded Version The Selah Decoded Version renders what the Hebrew and Greek words meant to the people who first heard them.
King James wording
King James Version
But bade them farewell, saying, I must by all means keep this feast that cometh in Jerusalem: but I will return again unto you, if God will. And he sailed from Ephesus.THE KEY
The feast is a definite purpose, but the return remains an unclaimed future.
THE MEANING
A real commitment can be held without claiming control over what follows. The feast is a clear direction; the return remains conditional on God’s will. Purpose is named while the outcome stays open.
WHAT THIS UNDOES
The belief undone is that a firm intention guarantees its own outcome; the verse leaves the return conditional.
THE ROOT
θέλοντος
thelontos
GROWS FROM
θέλω
thelō
to wish, will, or intend
The return depends on another’s willing, not simply on the speaker’s plan. The Greek verb θέλω (thelō, to will or wish) keeps intention and outcome distinct: the journey can be planned while its fulfillment remains open.
ALSO GROWS
thelēma: will, desire
θέλημα
This noun names what is willed, making the verse’s condition about God’s intention explicit.
ethelothrēskeia: self-chosen worship
ἐθελοθρησκία
This compound carries the idea of willing or choosing; beside Acts, it highlights the difference between a person’s own choice and the will on which the return depends.
ποιῆσαι
poiēsai
GROWS FROM
ποιέω
poieō
to do, make, or perform
The verb translated “keep” also carries the sense of doing or performing the feast. The commitment is an enacted observance, not only a date marked on a calendar.
ALSO GROWS
poiētēs: doer, maker
ποιητής
The shared root presents the feast as something carried out in practice.
poiēma: a thing made, a work
ποίημα
This branch shows the root’s movement from doing to what is made or enacted, echoing the lived act of keeping the feast.
יְרוּשָׁלַיִם
Yerushalayim
GROWS FROM
שׁלם
sh-l-m
to be whole or complete
The name Yerushalayim (יְרוּשָׁלַיִם, Yerushalayim, Jerusalem) echoes שָׁלוֹם (shalom, wholeness), with its paired -ayim ending carrying the image of two wholenesses. As the feast’s destination, the name resonates with wholeness, while the return remains open to God’s will.
ALSO GROWS
shalom: wholeness, peace
שָׁלוֹם
The name’s shalom echo makes the destination resonate with wholeness.
shalem: whole, complete
שָׁלֵם
This branch makes the same root’s sense of completeness audible within the destination named in the verse.
THE PATTERN
A person can name a real purpose while leaving its fulfillment contingent on a will beyond their own.
A person's heart plans his way, but the LORD sets his steps firm.Instead, you ought to say, "If the LORD wills, we will live, and do this or that."But I will come to you swiftly, if the Lord wills, and I will know, not the word of the inflated ones, but the strength.THE THREAD
Instead, you ought to say, "If the LORD wills, we will live, and do this or that."Acts uses θέλοντος (thelontos, willing), and James uses θελήσῃ (thelēsē, may will); both are forms of θέλω (thelō, to will or wish). The shared verb places a definite plan beside a future that remains open.
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