God does require a person to “believe and be baptized to be saved” (Mark 16:16), however, children are incapable of true belief in the Lordship of Christ. I do not believe that a loving God who wants all to be saved (2 Peter 3:9), would punish a child for not doing something they are incapable of doing.
Sin is what keeps a person out of heaven. It is not possible for a child to truly sin. Sin is a willful transgression of God’s law (1 John 3:4). Sin is knowing the right thing to do but choosing to do wrong (James 4:17). A child may do bad things, but a child cannot yet commit sin that would separate them from God for all eternity.
Jesus emphasized the pure state of a child in (Matthew 18:1-5).
- At that time the disciples came to Jesus and said, “Who then is greatest in the kingdom of heaven?” And He called a child to Himself and set him before them, and said, “Truly I say to you, unless you are converted and become like children, you will not enter the kingdom of heaven. “Whoever then humbles himself as this child, he is the greatest in the kingdom of heaven. “And whoever receives one such child in My name receives Me
- "The person who sins will die. The son will not bear the punishment for the father's iniquity, nor will the father bear the punishment for the son's iniquity; the righteousness of the righteous will be upon himself, and the wickedness of the wicked will be upon himself.
- and He will wipe away every tear from their eyes; and there will no longer be any death; there will no longer be any mourning, or crying, or pain (Revelation 21:4)
- By CS - Quotes from NASB95