1 Corinthians 14:20

20Brothers, ado not be children in your thinking. bBe infants in evil, but in your thinking be cmature.

Ephesians 4:13-14

13until we all attain to dthe unity of the faith and of the knowledge of the Son of God, eto mature manhood,
Greek  to a full-grown man
to the measure of the stature of gthe fullness of Christ,
14so that we may no longer be children, htossed to and fro by the waves and carried about by every wind of doctrine, by human cunning, by craftiness in ideceitful schemes.

1 John 2:12

12 I am writing to you, little children,
because jyour sins are forgiven for his name’s sake.
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