The Lord brought Israel to the wilderness to purify them from sin and train them in faithfulness. In the Epistle lesson, St. Paul tells us that the Israelites serve as an example for us as we head towards the future Promised Land of the resurrection in the new heavens and new earth in and through Jesus Christ.
The Liturgy for Trinity 9 can be found here: 20200809 – Trinity 9.
Lesson: Wisdom 11:21–12:2
Epistle: 1 Corinthians 10:1-13
Gospel: St. Luke 15:11-32