Dear friend, Jesus does not make His will too difficult for you to understand and fulfill. He gave His own life for saving you. He loves you so deeply; surely then He also makes clear how you enter His new life.
So turn away from the confusing opinions of men. Listen to the one and only Teacher (Matthew 17:5; 23:10). He chooses His words with care. The wording is not “born of water and born of Spirit.” Nor is it even “born of water and of Spirit.” Jesus literally says, “Unless one is born of water and the Spirit, he cannot see the kingdom of God.” The one word “of” goes with both “water” and “Spirit.” The original wording ties both together, showing clearly that this is a single birth, which Jesus also calls “born of the Spirit” (John 3:8).
The Spirit, of course, is God. He often speaks of Himself in this way when He reaches into the world with special power. Therefore the writer John also uses the term “born… of God” (John 1:13; 1 John 2:29; 3:9; 4:7; 5:1,4,18)