Short answer: Yes. However, and this may seem obvious and come as no surprise, it seems to me that for those who affirm and embrace Christianity, there is some measure of obligation to grow or mature in the faith. Consider how the image of “infant” or “children” is used in the following passages:
I could not speak to you as spiritual people, but rather as people of the flesh, as infants in Christ. I fed you with milk, not solid food, for you were not ready for solid food. Even now you are still not ready, for you are still of the flesh. For as long as there is jealousy and quarreling among you, are you not of the flesh, and behaving according to human inclinations? For when one says, “I belong to Paul,” and another, “I belong to Apollos,” are you not merely human? — 1 Corinthians 3:1-4
We must no longer be children, tossed to and fro and blown about by every wind of doctrine, by people’s trickery, by their craftiness in deceitful scheming. But speaking the truth in love, we must grow up in every way into him who is the head, into Christ, — Ephesians 4:14-15
About this we have much to say that is hard to explain, since you have become dull in understanding. For though by this time you ought to be teachers, you need someone to teach you again the basic elements of the oracles of God. You need milk, not solid food; for everyone who lives on milk, being still an infant, is unskilled in the word of righteousness. But solid food is for the mature, for those whose faculties have been trained by practice to distinguish good from evil. — Hebrews 5:11-14
Now, this is not to say we get to define how the growth takes place or what it looks like. But it is to suggest that scripture laments those who name Christ as Lord but are not progressing in their knowledge and love of him.
Similarly, see my post A Faith That Works: James 2:14-26.
