Acts 2:14a, 22-32
2:14a But Peter, standing with the eleven, raised his voice and addressed them,
2:22 “You that are Israelites, listen to what I have to say: Jesus of Nazareth, a man attested to you by God with deeds of power, wonders, and signs that God did through him among you, as you yourselves know-
2:23 this man, handed over to you according to the definite plan and foreknowledge of God, you crucified and killed by the hands of those outside the law.
2:24 But God raised him up, having freed him from death, because it was impossible for him to be held in its power.
2:25 For David says concerning him, ‘I saw the Lord always before me, for he is at my right hand so that I will not be shaken;
2:26 therefore my heart was glad, and my tongue rejoiced; moreover my flesh will live in hope.
2:27 For you will not abandon my soul to Hades, or let your Holy One experience corruption.
2:28 You have made known to me the ways of life; you will make me full of gladness with your presence.’
2:29 “Fellow Israelites, I may say to you confidently of our ancestor David that he both died and was buried, and his tomb is with us to this day.
2:30 Since he was a prophet, he knew that God had sworn with an oath to him that he would put one of his descendants on his throne.
When Jesus rode into Jerusalem on a colt, the people were calling Him Son of David. This is because of the word given to David by the Lord,
When your days are fulfilled and you lie down with your fathers, I will raise up your offspring after you, who shall come from your body, and I will establish his kingdom. 13 He shall build a house for my name, and I will establish the throne of his kingdom forever. 14 I will be to him a father, and he shall be to me a son. When he commits iniquity, I will discipline him with the rod of men, with the stripes of the sons of men, 15 but my steadfast love will not depart from him, as I took it from Saul, whom I put away from before you. 16 And your house and your kingdom shall be made sure forever before me. Your throne shall be established forever.’ ” (2 Samuel 7:12-15)
Jesus is fulfillment of many OT prophecies. As Christians we aught to familiarize ourselves with the OT. We should be able to communicate the gospel and how Jesus was foretold. Peter and Paul were affective communicators of the gospel because they knew their OT so well. Let us go and do likewise.