I believe those infants who die which are elect will indeed be saved along with us who believe. For those who believe it is impossible for an infant to be born again need only consider John the Baptist, who was filled with the Holy Spirit even in the womb! What is stopping God from doing the same with infants of His own choosing still today? Now does God choose to save all infants who die in infancy? I do not know. This is indeed a case of Deut. 29:29, [i]"The secret things belong unto the LORD our God: but those things which are revealed belong unto us and to our children for ever, that we may do all the words of this law."[/i]
However I do tend to believe that God does indeed save at least the dying children of believers, as is stated in the canons of dort,
"Article 17: The Salvation of the Infants of Believers
Since we must make judgments about God's will from his Word, which testifies that the [b]children of believers are holy, not by nature but by virtue of the gracious covenant in which they together with their parents are included, godly parents ought not to doubt the election and salvation of their children whom God calls out of this life in infancy."[/b]
1 Corinthians 7:14, [b]"For the unbelieving husband has been sanctified through his wife, and the unbelieving wife has been sanctified through her believing husband. Otherwise your children would be unclean, but as it is, they are holy."[/b] Notice the following: the children of even only one believer are "holy", also known as, "set apart" to God.
[b]
Westminster Confession of Faith
Chapter X
Of Effectual Calling
III. Elect infants, dying in infancy, are regenerated, and saved by Christ, through the Spirit,[12] who works when, and where, and how He pleases:[13] so also are all other elect persons who are incapable of being outwardly called by the ministry of the Word.[14][/b]
Scripture Proofs:
[12] LUK 18:15 And they brought unto him also infants, that he would touch them: but when his disciples saw it, they rebuked them. 16 But Jesus called them unto him, and said, Suffer little children to come unto me, and forbid them not: for of such is the kingdom of God. ACT 2:38 Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost. 39 For the promise is unto you, and to your children, and to all that are afar off, even as many as the Lord our God shall call. JOH 3:3 Jesus answered and said unto him, Verily, verily, I say unto thee, Except a man be born again, he cannot see the kingdom of God. 5 Jesus answered, Verily, verily, I say unto thee, Except a man be born of water and of the Spirit, he cannot enter into the kingdom of God. 1JO 5:12 He that hath the Son hath life; and he that hath not the Son of God hath not life. ROM 8:9 But ye are not in the flesh, but in the Spirit, if so be that the Spirit of God dwell in you. Now if any man have not the Spirit of Christ, he is none of his.
[13] JOH 3:8 The wind bloweth where it listeth, and thou hearest the sound thereof, but canst not tell whence it cometh, and whither it goeth: so is every one that is born of the Spirit.
[14] 1JO 5:12 He that hath the Son hath life; and he that hath not the Son of God hath not life. ACT 4:12 Neither is there salvation in any other: for there is none other name under heaven given among men, whereby we must be saved.