“This is how we know that we live in Him and He in us: He has given us of His Spirit.” (I John 4:13 NIV)
When we believe in Jesus Christ and repent of our sins as God commands, God will send His Holy Spirit to indwell us and change us with power from above.
Here is some of the evidence of the Holy Spirit in our lives according to the epistle of First John.
We love others. (I John 3:23)
We do not hate others. (I John 4:20)
We do not continue in sin. (I John 3:6)
We confess that Jesus is the Son of God. (I John 4:15)
We practice righteousness (I John 2:29)