Well that’s a tricky question since many have different definitions of the word believe. In the English language the word believe can mean.
to consider to be true or honest believe the reportsyou wouldn't believe how long it took
b: to accept the word or evidence of I believe youcouldn't believe my ears
2: to hold as an opinion :
SUPPOSEI believe it will rain soon
intransitive verb
1a: to accept something as true,
genuine, or real ideals we believe inbelieves in ghosts
b: to have a firm or wholehearted religious conviction or persuasion : to regard the existence of God as a fact Do you believe?—usually used with inbelieve in the Scriptures
2: to have a firm conviction as to the goodness,
efficacy, or ability of something believe in exercise
3: to hold an opinion :
THINKI believe so
However the primary definition of the Greek word pisteuo implies a level of conviction and obedience. The root word pistis translated to faith in English also implies loyalty, faithfulness, trustworthiness, and fidelity.
faith
G4102
Lemma:
πίστις
Transliteration:
pístis
Pronounce:
pis'-tis
Part of Speech:
Noun Feminine
Language:
greek
Description:
1) conviction of the truth of anything, belief; in the NT of a conviction or belief respecting man's relationship to God and divine things, generally with the included idea of trust and holy fervour born of faith and joined with it a) relating to God
1) the conviction that God exists and is the creator and ruler of all things, the provider and bestower of eternal salvation through Christ b) relating to Christ
1) a strong and welcome conviction or belief that Jesus is the Messiah, through whom we obtain eternal salvation in the kingdom of God c) the religious beliefs of Christians d) belief with the predominate idea of trust (or confidence) whether in God or in Christ, springing from faith in the same
2) fidelity, faithfulness a) the character of one who can be relied on
believe
G4100
Lemma:
πιστεύω
Transliteration:
pisteúō
Pronounce:
pist-yoo'-o
Part of Speech:
Verb
Language:
greek
Description:
1) to think to be true, to be persuaded of, to credit, place confidence in a) of the thing believed
1) to credit, have confidence b) in a moral or religious reference
1) used in the NT of the conviction and trust to which a man is impelled by a certain inner and higher prerogative and law of soul
2) to trust in Jesus or God as able to aid either in obtaining or in doing something: saving faith
3) mere acknowledgment of some fact or event: intellectual faith
2) to entrust a thing to one, i.e. his fidelity a) to be intrusted with a thing
believers
G4103
Lemma:
πιστός
Transliteration:
pistós
Pronounce:
pis-tos'
Part of Speech:
Adjective
Language:
greek
Description:
1) trusty, faithful a) of persons who show themselves faithful in the transaction of business, the execution of commands, or the discharge of official duties b) one who kept his plighted faith, worthy of trust c) that can be relied on
2) easily persuaded a) believing, confiding, trusting b) in the NT one who trusts in God's promises
1) one who is convinced that Jesus has been raised from the dead
2) one who has become convinced that Jesus is the Messiah and author of salvation
I believe the biblical meaning of believe requires more than simply acknowledging Jesus’ existence.