Matthew 19 vs 13-15:
King James Bible
But Jesus said, Suffer little children, and forbid them not, to come unto me: for of such is the kingdom of heaven.
Matthew Henry's Concise Commentary
19:13-15 It is well when we come to Christ ourselves, and bring our children. Little children may be brought to Christ as needing, and being capable of receiving blessings from him, and having an interest in his intercession. We can but beg a blessing for them: Christ only can command the blessing. It is well for us, that Christ has more love and tenderness in him than the best of his disciples have. And let us learn of him not to discountenance any willing, well-meaning souls, in their seeking after Christ, though they are but weak. Those who are given to Christ, as part of his purchase, he will in no wise cast out. Therefore he takes it ill of all who forbid, and try to shut out those whom he has received. And all Christians should bring their children to the Saviour that he may bless them with spiritual blessings.
Verse 14. - Suffer [the] little children, and forbid them not, to come unto me. He speaks as though the infants were ready and eager to come to him, if they were not prevented. He thus intimates the truth that, though incompetent to undo, stand God's blessing, children were not incompetent to receive it. There was no natural impediment to bar the way. Unconscious intents, under the Mosaic dispensation, were admitted to the privileges of the Jewish Church by the rite of circumcision; in Christ's kingdom analogous mercies were to be extended to them. From this passage has been derived a cogent argument for infant baptism, because Christ herein showed, not only that tender age and immaturity of reason put no obstacle in the way of his blessing, but that children were the standard by which fitness for his kingdom was to be tested. For of such is the kingdom of heaven. They who would enter Christ's kingdom must be pure, simple, obedient, as little children (comp. Matthew 18:3). That is why he says, "of such," not "of these," intimating that it is not to the age, but to the disposition and character, that he refers. Some, not so suitably, confine the saying to such as are dedicated to God in baptism. It is well said that what children now are is God's work; what they shall be hereafter is their own.
Matthew 19:14 Additional Commentaries
Jesus Blesses the Children
13 Then some children were brought to Him so that He might lay His hands on them and pray; and the disciples rebuked them. 14 But Jesus said, "Let the children alone, and do not hinder them from coming to Me; for the kingdom of heaven belongs to such as these." 15 After laying His hands on them, He departed from there.