When I was a child, I spoke and thought and reasoned as a child. But when I grew up, I put away childish things. (NLT)
In Corinthians 13, the Apostle Paul is talking about love, and how love and faith and hope are greater than being able to prophesy or speak in tongues because faith, hope, and love last forever. Once we are with God, there will no longer be a need for prophets or speaking in tongues. So, like a child who grows and puts away childish things, so will we grow and put away these abilities.
Paul is not meaning to tell a child-army to grow up and stop being child-like in heart. To the contrary, Jesus explained the importance of having child-like faith. Rather Paul’s using a metaphor to explain that the things we think are important now, one day we will realize they are not of as much value as we placed on them. But, that we should place significant value on faith, hope, and love because those three will follow us into eternity. Those three are things we will never grow out of but need to grow into.
All this to say, just because someone throws out a verse to back their agenda don’t believe it. Look at the scriptures. Ask what the heart of the verse means. Don’t just believe everything you are told at face value. People are wrong sometimes. People lie sometimes. People manipulate sometimes.