The Greek καί is rendered as a coordinating conjunction in all three; the Vulgate splits the verb into Et ait, while Syriac fuses the conjunction with the verb in ܘܐܡܪ ('and-he-said'), a normal proclitic waw construction.
EN He said to them, “Why are you so afraid? How is it that you have no faith?”
ES Y á ellos dijo: ¿Por qué estáis así amedrentados? ¿Cómo no tenéis fe?
ZH-HANS 耶稣对他们说:「为什么胆怯?你们还没有信心吗?」
ZH-HANT 耶穌對他們說:「為甚麼膽怯?你們還沒有信心嗎?」
The Greek καί is rendered as a coordinating conjunction in all three; the Vulgate splits the verb into Et ait, while Syriac fuses the conjunction with the verb in ܘܐܡܪ ('and-he-said'), a normal proclitic waw construction.
Greek δειλοί ἐστε ('are you cowardly/timid') and Latin timidi estis preserve the adjective of fearfulness; the Syriac ܚܘܠܬܢܝܢ ܐܢܬܘܢ instead carries the sense 'fainthearted/lacking in spirit', a slightly softer lexical choice, with ܐܢܬܘܢ as the explicit independent pronoun subject. The Vulgate question mark (idx 7) is editorial.
The Greek temporal adverb οὔπω ('not yet') is matched by Vulgate necdum, but the Peshitta renders it with the demonstrative ܗܟܢ ('thus, so/even now'), reflecting a divergent construal of the elliptical phrase οὔπω … πῶς that vexes the Greek manuscript tradition itself.
The interrogative particle πῶς ('how') of the Greek NA28 reading οὔπω πῶς οὐκ ἔχετε πίστιν has no counterpart in either the Peshitta or the Vulgate, both of which transmit the simpler Western/Byzantine-type reading without πῶς (cf. the variant πῶς οὐκ vs. οὔπω alone).
Greek οὐκ ἔχετε πίστιν ('you do not have faith') and Latin habetis fidem use a verb of possession; the Syriac restructures with the negative existential particle ܠܝܬ plus the prepositional ܒܟܘܢ ('there is no faith in you'), a characteristic Semitic possessive idiom. The Peshitta opens this clause with ܘܠܡܢܐ ('and why'), supplying an interrogative absent from Greek and Latin at this point.
The Clementine Vulgate combines what other editions number as Mark 4:40 and 4:41 into a single verse, so the entire narrative of the disciples' fear and amazement (et timuerunt timore magno … obediunt ei?) appears here; this material corresponds to the separately-numbered Greek and Syriac verse 41 and has no parallel among the present Greek and Peshitta tokens.