substitution
All three attest
Greek NT
ἤρξαντο ὁδὸν ποιεῖν
Peshitta
ܡܗܠܟܝܢ ܗܘܘ
Vulgate
cœperunt progredi
The Greek idiom ἤρξαντο ὁδὸν ποιεῖν ('began to make a way/path') is textually disputed and notoriously difficult; the Vulgate cœperunt progredi ('began to advance') interprets it as movement, while the Peshitta abandons the 'began' construction entirely, using the durative periphrasis ܡܗܠܟܝܢ ܗܘܘ ('they were walking'). The traditions diverge substantively on whether the disciples 'made a path' or simply 'walked along', reflecting an ancient exegetical crux.