Peter proclaiming to the house of Cornelius the good news is a truth right from heart of God with equity and love, sweeping away all the narrow-mindedness which, in this case, was the hope of salvation found in being circumcised or in the theology of the Rabbis. For ourselves, we too may be wrapped up in the theology of our favourite theologian or in our faith’s dogmatism too. What Peter preached was similar to the words Paul used in Romans —
Because[a] if you confess with your lips that Jesus is Lord and believe in your heart that God raised him from the dead, you will be saved. For one believes with the heart and so is justified, and one confesses with the mouth and so is saved. – Romans 10:9-10
We will only taste the full meaning of salvation when we call on the Lord by whom we shall be saved.
Believing in the name of Jesus does not refer to a general, vague sort of belief. Rather, it is specific and personal. To believe in Jesus means that I believe He is the Lord who gave Himself on the cross for my sins. I believe the promise of God, that whoever believes on Him receives eternal life as God’s gift, not based on any human merit, but only on God’s free grace. To believe in Jesus means that I no longer rely on anything in myself to commend myself to God. Rather, I trust only in what Jesus did on the cross as my hope for forgiveness of sins and eternal life.
When Jesus Christ arrived, He destroyed the effects of evil everywhere He went. He did this openly, before witnesses, where everyone could see. He came to a world that was lost and despairing, without hope. Everywhere He went He set people free and brought again to human hearts the hope that there is a way out of the desperate bondage of fallen humanity.
Then Peter began to speak to them: “I truly understand that God shows no partiality, but in every nation anyone who fears him and does what is right is acceptable to him. You know the message he sent to the people of Israel, preaching peace by Jesus Christ—he is Lord of all. That message spread throughout Judea, beginning in Galilee after the baptism that John announced: how God anointed Jesus of Nazareth with the Holy Spirit and with power; how he went about doing good and healing all who were oppressed by the devil, for God was with him. We are witnesses to all that he did both in Judea and in Jerusalem. They put him to death by hanging him on a tree; but God raised him on the third day and allowed him to appear, not to all the people but to us who were chosen by God as witnesses, and who ate and drank with him after he rose from the dead. He commanded us to preach to the people and to testify that he is the one ordained by God as judge of the living and the dead. All the prophets testify about him that everyone who believes in him receives forgiveness of sins through his name.” – Acts 10:34-43