This article is an attempt to summarize the results of the author's doctoral thesis. Three aspects of the problem under investigation are discussed, i e the texthistorical, methodological and hermeneutical aspects. The following became clear after analyzing the citations in the Petrine and Pauline speeches: (a) the reconstructed LXX Textvorlage which Luke has used,
reflects a strong Semitic style; (b) some quotations were already used in pre-Lukan times, but seem to be checked and reinterpreted by Luke; (c) his use of Scripture functions on two levels: informative, focusing on the past with a strong christological trend, and normative, focusing on the present and future with an appealing nature for the current listeners/readers; and (d) Luke's understanding of Scripture fits in within his salvation history, presented from a Theo-centric perspective, pneumatological-prophetically
mediated, and with emphasis on the eschatology, christology and soteriology.