Election

One of the perfect examples of the "conviction" is Jesus' knocking in Revelatoin Revelation 3:20, Jesus said:
Behold, I stand at the door and knock. If anyone hears My voice and opens the door, I will come in to him and dine with him, and he with Me.

Recognizing the Jesus voice is like a sheep recognizing the shepherd's voice. Only the Holy Spirit can prick a person's heart to cause a person to hear Christ's voice. Jesus said in John 10:14-15 I am the good shepherd; and I know My sheep, and am known by My own. As the Father knows Me, even so I know the Father; and I lay down My life for the sheep.

Acts 10:44
[ The Holy Spirit Falls on the Gentiles ] While Peter was still speaking these words, the Holy Spirit fell upon all those who heard the word.

Acts 15:7-9
Peter rose up and said to them: “Men and brethren, you know that a good while ago God chose among us, that by my mouth the Gentiles should hear the word of the gospel and believe. So God, who knows the heart, acknowledged them by giving them the Holy Spirit, just as He did to us, and made no distinction between us and them, purifying their hearts by faith."

Galatians 3:2
This only I want to learn from you: Did you receive the Spirit by the works of the law, or by the hearing of faith?

1 Thessalonians 1:5
For our gospel did not come to you in word only, but also in power, and in the Holy Spirit and in much assurance (conviction), as you know what kind of men we were among you for your sake.

Without the Holy Spirit, we ask God for our salvation. It is only when the Holy Spirit convicts us, our salvation is secured.

Ephesians 1:13
In Him you also trusted, after you heard the word of truth, the gospel of your salvation; in whom also, having believed, you were sealed with the Holy Spirit of promise.

2 Timothy 2:19
Nevertheless the solid foundation of God stands, having this seal: “The Lord knows those who are His,” and, “Let everyone who names the name of Christ depart from iniquity.”