We were all born from our mother or from a woman, that is to say from flesh. Jesus said to get born again, of water and the Spirit to enter the kingdom of God (John 3:5).
To get born again means to get born of God. There is the baptism of water and the baptism of the Spirit when we receive the gift of the Spirit (Acts 2:38).
Then Peter said to them, "Repent, and let every one of you be baptized in the name of Jesus Christ for the remission of sins; and you shall receive the gift of the Holy Spirit. For the promise is to you and to your children, and to all who are afar off, as many as the Lord our God will call." (Acts 2:38-39, NKJV)
The Holy Spirit or the Spirit of God is also called the Spirit of Christ. It is a good thing to get born again in the church, the assembly of born again believers.