The earliest report from the blessing of oils appears from the Apostolic Custom, an early Christian document commonly acknowledged for being dated right before 235 CE. Nowadays, consecrating the oils is closely tied to preparation for Holy Saturday’s Easter Vigil, as 1000's are baptized into your Catholic Church from https://liantong.com.tw/%e6%96%b0%e7%ab%b9%e6%88%bf%e5%b1%8b%e4%ba%8c%e8%83%8e%e8%b2%b8%e6%ac%be%e8%a9%b3%e7%b4%b0%e6%94%bb%e7%95%a5%ef%bc%9a%e6%8f%90%e4%be%9b%e8%b3%87%e9%87%91%e5%bd%88%e6%80%a7%e7%ae%a1%e7%90%86/