Following is a link to readings from the Revised Common Lectionary for the First Sunday of Advent for 2023.

It begins:

Isaiah 64:1-9
64:1 O that you would tear open the heavens and come down, so that the mountains would quake at your presence--

64:2 as when fire kindles brushwood and the fire causes water to boil-- to make your name known to your adversaries, so that the nations might tremble at your presence!

Here is the complete text for the first Sunday.