Jesus taught Nicodemus that he must be “born of water" to enter the kingdom of God. To be born of water is to be baptized. Baptism is a symbol of rebirth, because immersion in water symbolizes the death or burial of past sins. When we rise out of the water, we are born again and start a new life. To be born of the Spirit is to receive the gift of the Holy Ghost.
Baptized church members are not born again by the mere fact of baptism alone.
Other actions are required:
Believe in Jesus Christ John 3:16, 18.
Experience “a mighty change in … our hearts, that we have no more disposition to do evil, but to do good continually” Mosiah 5:2; Alma 5:12–14, 26.
Change "from [a] carnal and fallen state, to a state of righteousness” Mosiah 27:25.
Become “[God’s] sons and daughters” Mosiah 5:7; 27:25.
Become “new creatures” Mosiah 27:26.
Have “the image of God engraven upon [our] countenances” Alma 5:14,19.
Repent so our “garments [are] purified until they are cleansed from all stain, through the blood of [Christ]” Alma 5:21; Alma 5:19, 33–34; 22:18.
Accept and use the atonement for faith, repentance, grace, and comfort--just as the Moses lifted up the serpent in the wilderness for the children of Israel to look upon in faith for healing and comfort. John 3:14-18.
Love light and shun darkness John 3:19-21.
I will forever be grateful for rebirth, grace, comfort, direction, and light. How is it I was born at such a time and place as this with liberty of religion and speech as well as plenty, peace, safety, and security. I'm truly blessed.