Webster's Revised Unabridged Dictionary · 1913

Believe

Believe ({not transcribed}) , transitive verb

[Old English bileven (with pref. be- for Anglo-Saxon ge-), from Anglo-Saxon gelīfan, gelīfan; akin to Dutch gelooven, Old High German gilouban, German glauben, Old Saxon gilībian, Gothic galaubjan, and Gothic liubs dear. See Lief, a., Leave, n.]

To exercise belief in; to credit upon the authority or testimony of another; to be persuaded of the truth of, upon evidence furnished by reasons, arguments, and deductions of the mind, or by circumstances other than personal knowledge; to regard or accept as true; to place confidence in; to think; to consider; as, to believe a person, a statement, or a doctrine.
Our conqueror (whom I now Of force believe almighty). — Milton
King Agrippa, believest thou the prophets? — Acts xxvi. 27
Often followed by a dependent clause. I believe that Jesus Christ is the Son of God. — Acts viii. 37

Believe , intransitive verb

1.
To have a firm persuasion, esp. of the truths of religion; to have a persuasion approaching to certainty; to exercise belief or faith.
Lord, I believe; help thou mine unbelief. — Mark ix. 24
With the heart man believeth unto righteousness. — Rom. x. 10
2.
To think; to suppose.
I will not believe so meanly of you. — Fielding
Collocations (2)
To believe in , (a) To believe that the subject of the thought (if a person or thing) exists, or (if an event) that it has occurred, or will occur; -- as, to believe in the resurrection of the dead. She does not believe in Jupiter. — J. H. Newman (b) To believe that the character, abilities, and purposes of a person are worthy of entire confidence; -- especially that his promises are wholly trustworthy. Let not your heart be troubled: ye believe in God, believe also in me. — John xiv. 1 (c) To believe that the qualities or effects of an action or state are beneficial: as, to believe in sea bathing, or in abstinence from alcoholic beverages.
To believe on , to accept implicitly as an object of religious trust or obedience; to have faith in.