1 Corinthians 15:2

¹ Moreover, brethren, I declare unto you the gospel which I preached unto you, which also ye have received, and wherein ye stand;

By which also ye are saved, if ye keep in memory what I preached unto you, unless ye have believed in vain.

³ For I delivered unto you first of all that which I also received, how that Christ died for our sins according to the scriptures;

⁴ And that he was buried, and that he rose again the third day according to the scriptures:

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB: By this gospel you are saved, if you hold firmly to the word I preached to you. Otherwise, you have believed in vain.
KJV: By which also ye are saved, if ye keep in memory what I preached unto you, unless ye have believed in vain.
WEB: by which also you are saved, if you hold firmly the word which I preached to you—unless you believed in vain.
ASV: by which also ye are saved, if ye hold fast the word which I preached unto you, except ye believed in vain.
DARBY: by which also ye are saved, (if ye hold fast the word which I announced to you as the glad tidings,) unless indeed ye have believed in vain.
BLB: by which you⁺ are also being saved in what word I proclaimed to you⁺, if you⁺ hold fast—unless you⁺ believed in vain.

ÅB: som dere og blir frelst ved dersom dere holder fast ved det ord hvormed jeg forkynte dere det, såfremt dere ikke forgjeves er kommet til troen.
OTB: Gjennom hvilket dere også blir frelst, hvis dere holder fast ved budskapet jeg forkynte for dere, med mindre deres tro var uten hensikt.
B1930: som I og blir frelst ved dersom I holder fast ved det ord hvormed jeg forkynte eder det, såfremt I ikke forgjeves er kommet til troen.

Hebrews 3:6
But Christ as a son over his own house; whose house are we, if we hold fast the confidence and the rejoicing of the hope firm unto the end.
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Hebrews 2:1
Therefore we ought to give the more earnest heed to the things which we have heard, lest at any time we should let them slip.
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Hebrews 3:14
For we are made partakers of Christ, if we hold the beginning of our confidence stedfast unto the end;
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2 Timothy 1:9
Who hath saved us, and called us with an holy calling, not according to our works, but according to his own purpose and grace, which was given us in Christ Jesus before the world began,
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1 Corinthians 1:18
For the preaching of the cross is to them that perish foolishness; but unto us which are saved it is the power of God.
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Colossians 1:23
If ye continue in the faith grounded and settled, and be not moved away from the hope of the gospel, which ye have heard, and which was preached to every creature which is under heaven; whereof I Paul am made a minister;
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Ephesians 2:8
For by grace are ye saved through faith; and that not of yourselves: it is the gift of God:
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John 8:31–32
Then said Jesus to those Jews which believed on him, If ye continue in my word, then are ye my disciples indeed;
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