Peter quoted the prophet Joel (Joel 2:32) in the following part of his gospel proclamation on Pentecost.
But everyone who calls on the name of the LORD will be saved. Acts 2:21 (NLT)
What exactly does it mean to “call on the name of the Lord”?
The Star Wars movie series presents God in an Eastern religion way as an impersonal “force” that can be tapped into by those who have knowledge. The God of the Bible, the true God, is a real Person. Not a human, but a person. Humans are created in his image. We have personality because that is an important aspect of God’s being. Personalities can think and communicate.
God has no problem at all in communicating with us. When we seek him, he tells us that we will find him.
Calling upon the Lord means we pray or speak to him as a genuine personality who listens to us and will respond. Jeremiah the prophet wrote:
Then you will call upon me and come and pray to me, and I will hear you. 13 You will seek me and find me, when you seek me with all your heart. Jeremiah 29:12-13 (ESV)
When we share the gospel, we should encourage our hearers to engage Jesus on a personal level by “calling” to him in prayer. We have the sure promise that he will allow us to find him when we seek him with all our hearts.