"Helpless" babies and sinners in the Bible are discussed in Ephesians 2:11-16 and Romans 5:12-19; Romans 5:6-11 and 8:31-39; 2 Timothy 2:13 and 2 Corinthians 1:19-22 and John 10:35. This directly relates to the subject of Salvation and Infant baptism.
The word "faith" does not appear in any of these passages. Infants without faith and hope and God are helpless, and God saves them "while they are still helpless" by baptism with water and the word .
The theological controversy between the doctrine of both Catholicism and Orthodoxy on salvation together, and the doctrinal position on salvation represented by the Protestant division between Reformation Theology and Arminianism, is rooted in the Gospel argument that Jesus died to save the helpless and powerless who have no faith, "having no hope and without God in the world"  No one is more helpless than the pagan groping in the darkness of ignorant unbelief without any real knowledge of the Gospel of Christ, and the unborn, newborn, infant, baby, or child in arms who cannot walk, and has no conscious faith and no conscious hope  Yet Jesus says, "Verily, verily, I say unto you, Except a man be born of water and the Spirit he cannot enter the kingdom of God."
Taken all together within the context of the whole of the Bible and together with the Christian belief that God cannot contradict Himself, and that scripture cannot be broken, and that God is not willing that any should perish, infant baptism is supported by the Bible.