One is the other, and vice-versa.Not as "a sinner" but as a mortal human being descended from Adam.
Hm. When Christ calls them "little children" and says "let them come to me," He specifies no age. I would put His comment there in Matthew 19 in the same light as what Peter says in Acts 2, that, in speaking to the men of Israel, he says, "the promise is for you and for your children and for all who are far off, everyone whom the Lord our God calls to Himself." Here again, Peter specifies no age. Everyone is eligible, regardless of age....infants. babies, and very young children (called "little children" by Christ) are already accepted by God into the Kingdom of Heaven, since Christ died for them also.
Regarding Christ's atonement, Christ died for God's elect. His sacrifice was sufficient for all to be saved, but only effectual for God's elect, the ones He chose before the foundation of the world. Regarding babies, as I said in Post 59, It depends on whether God has changed his/her heart or not, whether the baby has been born again of the Spirit, which can happen at any age, even before birth, as was the case with John, who leapt in his mother Elizabeth's womb when greeted by Mary, who was pregnant with Jesus at the time. John was elect even at that moment; that's at least one reason why that passage is in the Bible (in Luke 1). Does this happen for all babies who die at any time after their conception? I would answer in the negative, but we cannot possibly know, because there is nothing in Scripture to indicate one way or the other. If you think so and would answer 'yes,' as it seems, I disagree, but I cannot argue with your position. Likewise, Enoch, with all due respect, you cannot really argue with mine; there is just nothing in Scripture to indicate one way or the other.
Grace and peace to you.