All the different ways God has chosen to display his glory in creation and redemption seem to reach their culmination in the praises of his redeemed people. God governs the world with glory precisely that he might be admired, marvelled at, exalted and praised. The climax of his happiness is the delight he takes in the echoes of his excellence in the praises of the saints.
John PiperJohn's baptism...was a radical act of individual commitment to belong to the true people of God, based on personal confession and repentance... This is one of the main reasons that I do not believe in baptizing infants, who cannot make this personal commitment or confession or repentance. John's baptism was an assault on the very assumptions that give rise to much infant baptism.
John Piper