祂的工作－神对祂的证明
复活基督的繁殖开始于耶路撒冷，然后扩展到犹太地、撒玛利亚和全世界。在二章，有藉着彼得一班同工的职事，在耶路撒冷、犹太地并撒玛利亚繁殖的开始。
二章二十二节的“证明，”直译，指出，展示，陈列。意即藉着表明加以证明，因而带来称许。这指明主的工作乃是神对祂的证明，对祂的展示。当基督生活并尽职的时候，凡祂所作的，都展示祂的工作乃是神所作的。耶稣已经完全受到神的试验、证实并称许。
按着神的定议先见受死
我们看见，主的死是照着神的定议先见。这定议必定是神圣的三一在创世以前举行的会议中所定的（彼前一20，启十三8），指明主钉十字架不是人类历史上偶然的事，而是特意成就三一神的神圣定议。
基督的死也是按着神的先见。基督是神在创世以前（彼前一20），按着祂的先见，为祂的选民所豫定并豫备作救赎羔羊的（约一29）。这事的成就不是偶然的，乃是按着神永远的定旨和计画。因此，在神永远的眼光里，从创世以来，就是从人（世界的一部分）堕落起，基督就被杀了（启十三8）。
二章二十三节说，藉着不法之人的手，把主耶稣钉在十字架上杀了。这些不法之人包括加略人犹大、祭司长、守殿官、长老、大祭司、犹太议会、彼拉多、希律和罗马兵丁，主要的是犹太宗教徒和他们的差役，以及外邦政客和他们的部属。这指明耶稣是被全人类所杀的。
这里说主耶稣被钉在十字架上。犹太人的死刑是用石头打死（利二十2，27，利二四14，申十三10，申十七5）。钉十字架是外邦人的刑罚（拉六11），是罗马人用以处决奴隶和重罪犯人的。将主耶稣钉十字架，不仅应验旧约（申二一23，加三13，民二一8-9），也应验主所说祂要怎样死的话（约三14，约八28，约十二32）；祂若是被石头打死，那些话就无法应验了。这是神的主宰，就在主受死前不久，罗马帝国制定法律：被判死刑的罪犯要钉十字架。
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Demonstration Lord’s Work and Death – Acts 2:23
His Work – God’s Demonstration of Him
The propagation of the resurrected Christ begins in Jerusalem and then spreads to Judea, Samaria and the entire world. In chapter two we have the beginning of the propagation in Jerusalem, Judea and Samaria through the ministry of Peter’s company.
The Greek word translated “demonstrated” in Acts 2:22 literally means to point out, to exhibit, to show forth, in the sense of proving by demonstration, thus bringing about an approval. This indicates that the Lord’s work was God’s demonstration of him, his exhibition of him. While Christ was living and ministering, whatever he did was an exhibition of the fact that his work was done by God.
His Death According to God’s Determined Counsel and Foreknowledge
We see that the Lord’s death was according to God’s determined counsel and foreknowledge (1 Pet. 1:20; Rev. 13:8). This indicates that the Lord’s crucifixion was not an accident in human history, but a purposeful fulfillment of the divine counsel determined by the Triune God.
Christ’s death was also according to the foreknowledge of God. Christ was foreordained, prepared, by God to be his redeeming Lamb (John 1:29) for his elect according to his foreknowledge before the foundation of the world (1 Pet. 1:20). This was done according to God’s eternal purpose and plan, not accidentally. Hence, in the eternal view of God, from the foundation of the world, that is, the fall of man as a part of the world, Christ was slain (Rev. 13:8).
Acts 2:23 says that through the hand of lawless men the Lord Jesus was nailed to the cross and killed. These lawless men included Judas Iscariot (Luke 22:3-6), chief priests, officers of the temple, elders, the high priest and the Jewish Sanhedrin, Pilate, Herod and the Roman soldiers – mainly the Jewish religionists with their deputies and the gentile politicians with their subordinates. This indicates that Jesus was killed by all mankind.
The Lord Jesus was nailed to the cross. The Jewish death penalty was by stoning (Lev. 20:2, 27; 24:23; Deut. 13:10; 17:5). Crucifixion was a heathen practice (Ezra 6:11), adopted by the Romans for the execution of slaves and heinous criminals only. The crucifixion of the Lord Jesus was not only a fulfillment of the Old Testament (Deut. 21:23; Gal. 3:13; Num. 21:8-9), but also of the Lord’s own word concerning the mode of his death (John 3:14; 8:28; 12:32), which could not have been fulfilled by stoning. It was of God’s sovereignty that not long before the Lord Jesus was put to death the Roman Empire made the law that criminals sentenced to death were to be crucified.