Acts 2 (Amplified Bible) 30Being however a prophet, and knowing that God had sealed to him with an oath that He would set one of his descendants on his throne,
31He, foreseeing this, spoke [by foreknowledge] of the resurrection of the Christ (the Messiah) that He was not deserted [in death] and left in Hades (the state of departed spirits), nor did His body know decay or see destruction.
32This Jesus God raised up, and of that all we [His disciples] are witnesses.
+++"Peter's Sermon at Jerusalem.
2. Therefore certainly he spoke it as a prophet, with an eye to the Messiah, whose sufferings the prophets testified beforehand, and with them the glory that should follow; so did David in that psalm, as Peter here plainly shows. (1.) David knew that the Messiah should descend from his loins (v. 30), that God had sworn to him, that of the fruit of his loins, according to the flesh, he would raise up Christ to sit on his throne. He promised him a Son, the throne of whose kingdom should be established for ever, 2 Sam. vii. 12. And it is said (Ps. cxxxii. 11), God swore it in truth unto David. When our Lord Jesus was born, it was promised that the Lord God would give him the throne of his father David, Luke i. 32. And all Israel knew that the Messiah was to be the Son of David, that is, that, according to the flesh, he should be so by his human nature; for otherwise, according to the spirit, and by his divine nature, he was to be David's Lord, not his son. God having sworn to David that the Messiah, promised to his fathers, should be his son and successor, the fruit of his loins, and heir to his throne, he kept this in view, in penning his psalms. (2.) Christ being the fruit of his loins, and consequently in his loins when he penned that psalm (as Levi is said to be in Abraham's loins when he paid tithes to Melchizedek), if what he says, as in his own person, be not applicable to himself (as it is plain that it is not), we must conclude it points to that son of his that was then in his loins, in whom his family and kingdom were to have their perfection and perpetuity; and therefore, when he says that his soul should not be left in its separate state, nor his flesh see corruption, without doubt he must be understood to speak of the resurrection of Christ, v. 31. And as Christ died, so he rose again, according to the scriptures; and that he did so we are witnesses. (3.) Here is a glance at his ascension too. As David did not rise from the dead, so neither did he ascend into the heavens, bodily, as Christ did, v. 34. And further, to prove that when he spoke of the resurrection he meant it of Christ, he observes that when in another psalm he speaks of the next step of his exaltation he plainly shows that he spoke of another person, and such another as was his Lord (Ps. cx. 1): "The Lord said unto my Lord, when he had raised him from the dead, Sit thou at my right hand, in the highest dignity and dominion there; be thou entrusted with the administration of the kingdom both of providence and grace; sit there as king, until I make thy foes either thy friends or thy footstool," v. 35. Christ rose from the grave to rise higher, and therefore it must be of his resurrection that David spoke, and not his own, in the 16th Psalm; for there was no occasion for him to rise out of his grave who was not to ascend to heaven.