We read Acts 1:15-26, understanding Peter’s instruction in the light of Joshua 18:10, 1 Kingdoms/Samuel 10:20–21, 1 Chronicles 24:5, 25:8, Psalms LXX 68, 108 (MT 69, 109), Proverbs 16:33, Luke 24:3, 1 Cor 8:6, and 2 Peter 1:16-20. Especially important is how the apostle directs the praying community to look to the Old Testament for light upon their understanding of the LORD Jesus and what God is doing in their midst.