In this article, the missional significance of the delay of the Day of the Lord in the postexilic book of Malachi will be studied, employing a missional hermeneutic. First, the canon-historical meaning of the relevant eschatological texts in Malachi 3 will be established. Attention will be paid to the historical and literary context of Malachi in which his precursor, Joel, is pivotal. Second, the New Testament appropriation of Malachi 3 in Matthew’s Gospel is assessed. To conclude, a proposal how Malachi’s motif of the delay of the Day of the Lord can best be missionally re-employed in the present time, will be presented. Hence, apart from a brief note on missional hermeneutics, the missional origin of the text of Malachi, the missional motivation for the delay and the role of the Day of the Lord in modern missiology will be studied.