Note 14 at Acts 2:30: This verse makes it clear that David had understanding of what he was prophesying concerning the bodily resurrection of the Messiah (1 Pet. 1:10-11). There is not an exact account in scripture of a specific time that he received this revelation from God, however, it is very clear from the scriptures that Peter is quoting (Ps. 16:8-11; 110:1) together with the Spirit-inspired commentary of Peter (this verse), that the revelation prophesied had come to fulfillment.

Note 15 at Acts 2:30: This oath is probably referring to David's statement in Psalm 110:4 where the Lord swore and will not repent, that the Messiah will be a priest forever after the order of Melchizedek.

Note 16 at Acts 2:30: As pointed out very clearly here, Jesus was a physical descendant of David, not a spiritual descendant. This also further attests to the fact of an actual physical resurrection of Jesus' body and not just a spiritual resurrection, as some have suggested.